Method of computing energy loss generated in viscoelastic material and method for evaluating energy loss of golf ball by using method of computing energy loss
AssigneeSRI Sports Limited
InventorsKazuyoshi Miyamoto, Masaki Shiraishi
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Abstract
A method of computing an energy loss generated in a viscoelastic material, including analyzing a dynamic behavior of a to-be-analyzed object composed of the viscoelastic material by a numerical analysis method; and computing the energy loss of the object momently when the object makes the dynamic behavior by a viscous component of the object. The energy loss computed by the energy loss computing method is visualized by a golf ball-hitting simulation to momently evaluate the energy loss generated in the golf ball.
Claims4
A method of computing an energy loss generated in a viscoelastic material, comprising the steps of:
- analyzing a dynamic behavior of an object composed of a viscoelastic material by a numerical analysis method;
- and
- computing said energy loss of said object momently when said object makes said dynamic behavior by a viscous component of said object,
- wherein the viscoelastic material is a thermoplastic resin, a thermosetting resin, an elastomer, or a rubber composition,
- wherein said numerical analysis method is carried out by an analysis using a finite element method;
- and said energy loss is computed by using a value of a stress generated by viscosity of said viscoelastic material, when said object makes said dynamic behavior, and
- wherein said value of said stress generated by said viscosity is found by a viscous drag of a viscous component of said viscoelastic material and by a strain speed of said viscoelastic material at a time when said viscoelastic material makes said dynamic behavior.
A method of evaluating an energy loss of a golf ball composed of a viscoelastic material, comprising the steps of:
- analyzing a dynamic behavior of said golf ball in supposition of a collision between a golf club head and said golf ball;
- computing said energy loss generated in said golf ball owing to said collision by using a method of computing an energy loss generated in a viscoelastic material comprising the steps of:
- analyzing a dynamic behavior of an object composed of a viscoelastic material by a numerical analysis method;
- and computing said energy loss of said object momently when said object makes said dynamic behavior by a viscous component of said object, wherein the viscoelastic material is a thermoplastic resin, a thermosetting resin, an elastomer, or a rubber composition;
- inputting said energy loss to a visualizing software;
- and
- visualizing said energy loss momently.
Dependencies are inferred from the claim text.