Calculation method for physical body deformation under load propagation
AssigneeNihon University
InventorYasukazu Nishi
Life of this patent
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Abstract
Method for calculating a deformation of a physical body under a load by forming virtual first to n-th material agents and boundary agents. A predetermined load is transmitted from the virtual first material agent to the virtual second to n-th material agents and to the boundary agents based on a material property and a strain characteristic of the physical body along a load direction and orthogonal to the load direction.
Claims4
A calculation method for physical body deformation under load propagation which is a method of displaying a load propagation displacement of a physical body on a rigid physical body which undergoes a displacement constraint from a surrounding in a boundary which does not undergo the displacement constraint from the surrounding, said method comprising:
- virtually forming a first material agent having a shape of a hexahedron or a plane in the physical body at a position of a load exerted to an arbitrary position of the physical body;
- virtually forming a second material agent having the same shape as the first material agent at a contiguous face other than a face of the first material agent exerted with the load;
- virtually forming a third, a fourth, up to an n-th material agent similarly as the first material agent and successively up to a boundary between the physical body and the boundary which does not undergo the displacement constraint in the physical body and/or the rigid physical body which undergoes the displacement constraint;
- and
- virtually forming boundary agents having predetermined shapes at a contact face between the physical body and the boundary which does not undergo the displacement constraint and/or the rigid physical body which undergoes the displacement constraint, wherein
- in the first to n-th material agents,
- (i) with regard to a direction of the load, a predetermined load in accordance with a material property thereof is transmitted to an upper face and a lower face of the physical body in the load direction, a predetermined load in accordance with a strain characteristic of the physical body is transmitted to a face orthogonal to the load direction, and a load which undergoes the predetermined displacement constraint is transmitted to an upper face in the load direction of one material agent contiguous to another material agent,
- (ii) with regard to the load, in the boundary agent formed in the boundary which does not undergo the displacement constraint, a load having a value the same as a value of the load from a contiguous material agent in the load direction is transmitted, and
- (iii) in the boundary agent formed in the rigid physical body which undergoes the displacement constraint, with regard to the load from the contiguous material agent, a load having a value the same as a value of the load is transmitted in a direction reverse to a direction of the load to thereby display the load propagation displacement of the physical body.
A computer readable record medium recorded with a program for displaying a load propagation displacement of a physical body by a method of displaying a load propagation displacement of a physical body on a rigid physical body which undergoes a displacement constraint from a surrounding in a boundary which does not undergo the displacement constraint from the surrounding by a computer screen, said method comprising:
- virtually forming a first material agent having a shape of a hexahedron or a plane in the physical body at a position of a load exerted to an arbitrary position of the physical body;
- virtually forming a second material agent having the same shape as the first material agent at a contiguous face other than a face of the first material agent exerted with the load;
- virtually forming a third, a fourth, up to an n-th material agent similarly and successively up to a boundary between the physical body and the boundary which does not undergo the displacement constraint in the physical body and/or the rigid physical body which undergoes the displacement constraint;
- and
- virtually forming boundary agents having predetermined shapes at a contact face between the physical body and the boundary which does not undergo the displacement constraint and/or the rigid physical body which undergoes the displacement constraint, wherein
- in the material agents,
- (i) with regard to a direction of the load, a predetermined load in accordance with a material property thereof is transmitted to an upper face and a lower face of the physical body in the load direction, a predetermined load in accordance with a strain characteristic of the physical body is transmitted to a face orthogonal to the load direction, and a load which undergoes the predetermined displacement constraint is transmitted to an upper face in the load direction of one material agent contiguous to another material agent,
- (ii) with regard to the load, in the boundary agent formed in the boundary which does not undergo the displacement constraint, a load having a value the same as a value of the load from a contiguous material agent in the load direction is transmitted, and
- (iii) in the boundary agent formed in the rigid physical body which undergoes the displacement constraint, with regard to the load from the contiguous material agent, a load having a value the same as a value the load is transmitted in a direction reverse to a direction of the load to thereby display the load propagation displacement of the physical body.
Dependencies are inferred from the claim text.