What is claimed is:
1. A sanitary hose coupler attachable in a fluid pressure-tight connection to a resiliently deformable hose for conveying a liquid products under pressure, and releasably coupleable in a fluid pressure-tight coupling to a separate coupling member, said coupler comprising;
a. a circular cross-section, elongated tubular connector body having disposed through its length a bore and at a first, rear longitudinal end thereof a frusto-conically shaped nose piece which tapers rearwardly to a smaller diameter, and a front transversely disposed connector flange for releasably coupling to a separate coupling member.
b. a hollow cylindrical compression member which has a generally cylindrically-shaped outer wall surface and a central frusto-conically shaped bore bordered by a frusto-conically tapered inner wall surface which tapers rearwardly to a smaller diameter, and
c. clamping means for exerting a longitudinally directed compression force couple forwardly on said compression member and rearwardly on said connector body, whereby
d. an end of a resilient hose is insertable forwards through said bore of said compression member, said nose piece of said connector body is forcibly insertable rearwardly into a front entrance opening of a bore longitudinally disposed through said hose to thereby deform inner and outer cylindrical wall surfaces of an end portion of said hose to radially outwardly and forwardly tapered shapes, and said clamping means operated to force said inner tapered wall surface of said compression member against said deformed outer wall surface of said front end portion of said hose to make therewith a fluid pressure-tight seal.
2. The hose coupler of claim 1 wherein said frusto-conically shaped bore of said compression member has a larger cone angle than that of said frusto-conically shaped nose piece of said connector body.
3. The hose coupler of claim 1 wherein said cone angle of said compression member bore is about 7 degrees 2 degrees.
4. The hose coupler of claim 3 wherein said cone angle of said nose piece is less than that of said compression member bore.
5. The hose coupler of claim 1 wherein said tapered inner wall surface of said compression member is further defined as having formed therein a plurality of longitudinally spaced apart grooves, said grooves being adapted to receive resiliently deformable portions of an outer wall of a hose to thereby effect an enhance fluid pressure-tight seal between said inner wall surface of said compression member and said outer wall surface of said hose.
6. The hose coupler of claim 3 wherein said tapered inner wall surface of said compression member is further defined as having formed therein at least one radially inwardly protruding ridge located between at least one pair of said grooves, said ridge being adapted to resiliently indent an outer wall surface of said hose to thereby effect an enhanced fluid pressure-tight seal between said tapered inner wall surface or said compression member and said hose.
7. The hose coupler of claim 1 wherein said clamping means for exerting a longitudinally directed compressive force couple on said compression member and said connector body is further defined as comprising in combination;
a. an externally threaded cylindrical section of said body located longitudinally between said front connector flange and said nose piece thereof, and
b. a compression nut which has a rear annular flange through which is formed a coaxial hose bore, and a hollow cylindrical space within said compression nut which has a rear portion having a diameter greater than that of said compression member and a length greater than that of said compression member, and a front hollow cylindrical portion provided with internal helical threads adapted to threadably receive said external threads of said connector body, and
c. whereby said threaded portion of said connector body is threadable into said threaded front portion of said compression nut, and said compression nut and said connector body are threadably tightenable together so that a front inner surface of said rear flange of said compression nut exerts a forward directed force on said compression ring.
8. The hose coupler of claim 1 wherein said clamping means for exerting a longitudinally directed compressive force couple on said compression member and said connector body is further defined as comprising in combination,
a. a rear locking flange which protrudes radially outwardly from said connector body between said nose piece and said front connector flange, and
b. a front tubular portion of said hollow cylindrical compression member which extends longitudinally forward of a front transverse surface of said rear locking flange, said front tubular portion being deformed radially inwardly into locking compressive contact with a front transverse surface of said rear locking flange.
9. A sanitary hose coupler removably attachable in a fluid-tight connection to a flexible, resiliently deformable hose useable to convey liquid products under pressure, and releasably coupleable in a fluid pressure-tight coupling to a mating flange of a separate coupling member, said coupler comprising;
a. a circular cross section, tubular connector body having at a first, rear longitudinal end thereof a frusto-conically shaped nose piece which tapers rearwardly to a smaller diameter, a front transversely disposed annular ring-shaped flange having a transversely disposed front face, and an externally threaded cylindrical portion located longitudinally between said front connector flange and said rear nose piece,
b. a compression ring which has a generally cylindrically-shaped outer wall surface, and a central coaxial bore bordered by a frusto-conically tapered inner wall surface which tapers rearwardly to a smaller, inner diameter, and
c. a compression nut which has a rear annular flange through which is formed a coaxial hose bore, and a hollow cylindrical space within said nut which has a rear portion, and a front portion provided with internal helical threads and adapted to threadably receive said external threads of said connector body, said rear portion of said compression nut having a diameter greater than that of said compression ring, and a length greater than that of said compression ring, whereby
d. an end of a flexible hose is insertable forward through said bores of said compression nut and said compression ring, said nose piece of said connector body is forcibly insertable rearwardly into an entrance bore of said hose to thereby deform inner and outer cylindrical wall surfaces of an end portion of said hose to radially outwardly and forwardly tapered shapes, said threaded portion of said connector body is threadable into said threaded front portion of said compression nut, and said compression nut and said connector body are threadably tightenable together so that a front inner surface of said rear flange wall of said compression nut exerts a forward directed force on said compression ring, whereby said tapered inner wall surface of said compression ring is pressable against said deformed outer wall surface of said front end portion of said hose to make therewith a fluid pressure-tight seal.
10. The sanitary hose coupler of claim 9 wherein said tapered inner wall surface of said compression ring is further defined as having formed therein a plurality of longitudinally spaced apart grooves, said grooves being adapted to receive resiliently deformable portions of an outer wall of a hose to thereby effect an enhanced fluid pressure-tight seal between said inner wall surface of said compression ring and said outer wall surface of said hose.
11. The sanitary hose coupler of claim 10 wherein said tapered inner wall surface of said compression ring is further defined as having formed therein at least one radially inwardly protruding ridge located between at least one pair of said grooves, said ridge being adapted to resiliently indent an outer wall surface of said hose to thereby effect an enhanced fluid pressure-tight seal between said tapered inner wall surface of said compression ring and said hose.
12. The sanitary hose coupler of claim 9 whereby said frusto-conically shaped bore of said compression ring has a larger cone angle than that of said frusto-conically shaped nose piece of said connector body.
13. A sanitary hose coupler attachable in a fluid-tight connection to a flexible, resiliently deformable hose useable to carry liquid products under pressure, and releasably coupleable in a fluid pressure-tight coupling to a mating flange of a separate coupling member, said coupler comprising;
a. a circular cross section, tubular connector body having at a first, rear longitudinal end thereof a rearwardly protruding frusto-conically shaped nose piece which tapers rearwardly to a smaller diameter, a front transversely disposed annular ring-shaped flange which has a transversely disposed front face, and rear locking flange which protrudes radially outwardly from said connector body, said rear locking flange having a front shoulder, and a rear shoulder adjacent to said nose piece,
b. a compression sleeve which has a generally cylindrically-shaped outer wall surface, a central coaxial bore bordered by a frusto-conically tapered inner wall surface which tapers rearwardly to a smaller inner diameter, and a front annular ring-shaped thin wall portion which is radially inwardly deformable, whereby
c. an end of a flexible hose is insertable forward through said bore of said compression sleeve, said nose piece of said connector body is forcibly insertable rearwardly into an entrance bore of said hose to thereby deform inner and outer wall surfaces of an end portion of said hose to radially outwardly and forwardly tapered shapes, said connector body and said compression sleeve are compressible longitudinally together sufficiently far for said front thin wall portion of said compression sleeve to be translated longitudinally forward of said front shoulder of said locking flange and deformable radially inwardly into locking engagement with said front locking flange shoulder.
14. The sanitary hose coupler of claim 13 wherein said tapered inner wall surface of said compression sleeve is further defined as having formed therein a plurality of longitudinally spaced apart grooves, said grooves being adapted to receive resiliently deformable portions of an outer wall of a hose to thereby effect an enhanced fluid pressure-tight seal between said inner wall surface of said compression ring and said outer wall surface of said hose.
15. The sanitary hose coupler of claim 14 wherein said tapered inner wall surface of said compression sleeve is further defined as having formed therein at least one radially inwardly protruding ridge located between at least one pair of said grooves, said ridge being adapted to resiliently indent an outer wall surface of said hose to thereby effect an enhanced fluid pressure-tight seal between said tapered inner wall surface of said compression ring and said hose.
16. The sanitary hose coupler of claim 13 whereby said frusto-conically shaped bore of said compression sleeve has a larger cone angle than that of said frusto-conically shaped nose piece of said connector body.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. An analysis method using a finite element method for performing a stress analysis on an analysis model, comprising:
a first step of judging whether or not an analysis to be made is a shock analysis;
a second step of performing an analysis using an implicit method when said analysis to be made is judged to be a shock analysis in said first step; and
a third step of performing an analysis using an analysis method selected by an analyzer when said analysis to be made is judged to be not a shock analysis in said first step.
2. The analysis method using the finite element method according to claim 1, wherein a Newmark method is used as said implicit method.
3. An analysis method using a finite element method for creating meshes of an analysis model and for making a stress analysis of said analysis model, said analysis method comprising:
a first step of judging whether an analysis to be made is a shock analysis;
a second step of searching for a minimum mesh size out of said meshes of said analysis model;
a third step of creating a simplified analysis model using said minimum mesh size;
a fourth step of analyzing said simplified analysis model by using an implicit method and an explicit method;
a fifth step of selecting either of said implicit method or said explicit method as an optimal method, based on a result from an analysis in said fourth step;
a sixth step of having an analyzer select either of said implicit method or said explicit method based on a result from said analysis in said fourth step; and
a seventh step of analyzing said analysis model by using an analysis method selected in said fifth step or said sixth step.
4. The analysis method using the finite element method according to claim 3, wherein a Newmark method is used as said implicit method.
5. The analysis method using the finite element method according to claim 3, wherein, in said fifth step, when a following expression holds,
Tim<Tex
where said Tim denotes analysis time required for said implicit method and said Tex denotes analysis time required for said explicit method, said implicit method is selected while, when above said expression does not hold, said explicit method is selected.
6. The analysis method using the finite element method according to claim 3, wherein, in said fifth step, when a following expression holds,
abs(ESim)<abs(ESex)
where said abs denotes an absolute value, said Sim denotes an analysis result containing data on displacement, stress, and distortion obtained from said implicit method, said Sex denotes an analysis result containing data on displacement, stress, and distortion obtained from said explicit method, and said E denotes a result containing data on displacement, stress, and distortion obtained from said implicit method including an experiment value and an exact solution of a theoretical expression and from a method other than said explicit method, said implicit method is selected while, when above said expression does not hold, said explicit method is selected.
7. The analysis method using the finite element method according to claim 3, wherein, in said sixth step, said analyzer is allowed to select an analysis method based on a relation between analysis time required for said implicit method said Tim and analysis time required for said explicit method said Tex and based on a relation among an analysis result said Sim containing displacement, stress, and distortion obtained from said implicit method, an analysis result said Sex containing displacement, stress, and distortion obtained from said explicit method, and a result said E containing displacement, stress, and distortion obtained from said implicit method including an experiment value and an exact solution of a theoretical expression and from a method other than said explicit method.
8. A program for having a computer make an analysis using a finite element method used to perform a stress analysis of an analysis model: said program comprising:
a first step of judging whether or not an analysis to be made is a shock analysis;
a second step of performing an analysis using an implicit method when said analysis to be made is judged to be a shock analysis in said first step;
a third step of performing an analysis by using an analysis method selected by an analyzer when said analysis to be made is judged to be not a shock analysis in said first step.
9. The program according to claim 8, wherein a Newmark method is executed by a computer as said implicit method.
10. A program for having a computer execute an analysis using a finite element method which creates meshes of an analysis model and performs a stress analysis of said analysis model, said program comprising:
a first process of judging whether or not an analysis to be performed is a shock analysis;
a second process of searching for a minimum mesh size out of said meshes of said analysis model;
a third process of creating a simplified analysis model using said minimum mesh size;
a fourth process of analyzing said simplified analysis model by using an implicit method and an explicit method;
a fifth process of selecting either of said implicit method or said explicit method as an optimal method, based on a result from said analysis in said fourth process;
a sixth process of having an analyzer select either of said implicit method or said explicit method based on a result from said analysis in said fourth process; and
a seventh process of analyzing said analysis model by using an analysis method selected in said fifth process or said sixth process.
11. The program according to claim 10, wherein a Newmark method is executed by a computer as said implicit method.
12. The program according to claim 10, wherein, in said fifth process, when a following expression holds,
Tim<Tex
where said Tim denotes analysis time required for said implicit method and said Tex denotes analysis time required for said explicit method, said implicit method is selected while, when above said expression does not hold, said explicit method is selected.
13. The program according to claim 10, wherein, in said fifth process, when a following expression holds,
abs(ESim)<abs(ESex)
where said abs denotes an absolute value, said Sim denotes an analysis result containing data on displacement, stress, and distortion obtained from said implicit method, Sex said denotes an analysis result containing data on displacement, stress, and distortion obtained from said explicit method, and said E denotes a result containing data on displacement, stress, and distortion obtained from said implicit method including an experiment value and an exact solution of a theoretical expression and from a method other than said explicit method, said implicit method is selected while, when above said expression does not hold, said explicit method is selected.
14. The program according to claim 10, wherein, in said sixth process, said analyzer is allowed to select an analysis method based on a relation between said analysis time required for said implicit method said Tim and said analysis time required for said explicit method said Tex and based on a relation among an analysis result said Sim containing displacement, stress, and distortion obtained from said implicit method, an analysis result said Sex containing displacement, stress, and distortion obtained from said explicit method, and a result said E containing displacement, stress, and distortion obtained from said implicit method including an experiment value and an exact solution of a theoretical expression and from a method other than said explicit method.
15. A finite element method analysis system having a unit for creating meshes of an analysis model and having a unit for making an analysis using a finite element method used to perform a stress analysis on said analysis model using said finite element method, said finite element method analysis system comprising:
a first unit to judge whether or not an analysis to be made is a shock analysis;
wherein, when said analysis to be performed by said unit for making said analysis using said finite element method is judged by said first unit to be a shock analysis, an analysis is made by using an implicit method and wherein, when said analysis to be performed by said unit making said analysis using said finite element method is judged by said first unit to be not a shock analysis, said analysis is made by using an analysis method selected by an analyzer.
16. The finite element method analysis system according to claim 15, wherein said unit making said analysis using said finite element method performs a Newmark method as said implicit method.
17. A finite element method analysis system having a unit for creating meshes of an analysis model and having a unit for making an analysis using a finite element method used to perform a stress analysis on said analysis model using said finite element method, said finite element method analysis system comprising:
a first section to judge whether or not an analysis to be performed is a shock analysis;
a second section to search for a minimum mesh size out of said meshes of said analysis model;
a third section to create a simplified analysis model using said minimum mesh size;
a fourth section to select either of said implicit method or said explicit method as an optimal method, based on a result from a simplified analysis in which said simplified analysis model is analyzed by a unit for making an analysis using a finite element method by using an implicit method and an explicit method;
a fifth section to have an analyzer select either of said implicit method or said explicit method as an analysis method based on a result from said simplified analysis; and
wherein said unit for making an analysis using a finite element method analyzes said analysis model by using said fourth section or said fifth section.
18. The finite element method analysis system according to claim 17, wherein said unit making said analysis using said finite element method performs a Newmark method as said implicit method.
19. The finite element method analysis system according to claim 17, wherein, said fourth section, when a following expression holds,
Tim<Tex
where said Tim denotes analysis time required for said implicit method and said Tex denotes analysis time required for said explicit method, selects said implicit method while, when above said expression does not hold, selects said explicit method.
20. The finite element method analysis system according to claim 17, wherein, said fourth section, when a following expression holds,
abs(ESim)<abs(ESex)
where said abs denotes an absolute value, said Sim denotes an analysis result containing data on displacement, stress, and distortion obtained from said implicit method, said Sex denotes an analysis result containing data on displacement, stress, and distortion obtained from said explicit method, and said E denotes a result containing data on displacement, stress, and distortion obtained from said implicit method including an experiment value and an exact solution of a theoretical expression and from a method other than said explicit method, selects said implicit method while, when above said expression does not hold, selects said explicit method.
21. The finite element method analysis system according to claim 17, wherein said fifth section has said analyzer select an analysis method based on a relation between analysis time required for said implicit method said Tim and analysis time required for said explicit method said Tex and based on a relation among an analysis result said Sim containing displacement, stress, and distortion obtained from said implicit method, an analysis result said Sex containing displacement, stress, and distortion obtained from said explicit method, and a result said E containing displacement, stress, and distortion obtained from said implicit method including an experiment value and an exact solution of a theoretical expression and from a method other than said explicit method.