Method and apparatus for prediction of amount of deformation due to shrinkage of molded article
AssigneesDenso Corporation, Toyota Jidosha Kabushiki Kaisha, Toyoda Gosei Co., Ltd., Kanto Auto Works, Ltd., Toyota Boshoku Kabushiki Kaisha
InventorsTsuyoshi Arai, Tadayoshi Takahara, Yoshihito Saigo, Tatsuya Inoyama, Hiroshi Koyama
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Abstract
The method of predicting the amount of deformation due to shrinkage of a molded article of the present invention finds a support point P of the bending moment M from a distribution of shrinkage rates of a molding material forming a molded article 10 and uses the support point P to predict the amount of deformation. At that time, it is preferable to use the support point P to find the bending moment M and to use the bending moment M to predict the amount of deformation.
Claims9
A method of predicting an amount of deformation due to shrinkage of a molded article comprising:
- a processor finding a support point of a bending moment from a distribution of shrinkage rates of a molding material forming the molded article;
- the processor using said support point to find said bending moment;
- and
- the processor using said bending moment to predict said amount of deformation,
- wherein said molded article has a base on which a rib is provided, and a cross point of an extension direction of virtual extension toward the base side of a region where a distribution of shrinkage rates of the molding material forming the rib becomes discontinuous and a region where a distribution of shrinkage rates of said molding material forming said base becomes discontinuous in a cross-section of said molded article substantially perpendicular to said rib and including said rib is made said support point of said bending moment causing said rib to deform.
An apparatus for predicting an amount of deformation due to shrinkage of a molded article provided with:
- a unit finding a support point of a bending moment from a distribution of shrinkage rates of a molding material forming a molded article,
- a unit using said support point to find said bending moment, and
- a unit using said bending moment to predict said amount of deformation,
- wherein said molded article has a base on which a rib is provided, and
- a cross point of an extension direction of virtual extension toward the base side of a region where a distribution of shrinkage rates of the molding material forming the rib becomes discontinuous and a region where a distribution of shrinkage rates of said molding material forming said base becomes discontinuous in a cross-section of said molded article substantially perpendicular to said rib and including said rib is made said support point of said bending moment causing said rib to deform.
Dependencies are inferred from the claim text.