Trampoline jumping cloth shape-finding method based on finite element analysis

A finite element and cloth jumping technology, applied in the field of data simulation, can solve cumbersome problems

Active Publication Date: 2018-05-29
青岛海聚智能创新科技有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0002] Existing cloth jumping form-finding uses stress application or multi-key point displacement promotion, which is relatively cumbersome

Method used

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  • Trampoline jumping cloth shape-finding method based on finite element analysis

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] The present invention conducts type-finding analysis on the non-linear material jumping cloth of the trampoline based on finite elements. Since the jumping cloth is a nonlinear membrane material, its initial position and shape must be determined through the form-finding analysis of the jumping cloth during finite element analysis , the method of the present invention adopts the displacement of the geometric center point to lift the single membrane unit o...

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Abstract

The invention provides a trampoline jumping cloth shape-finding method based on finite element analysis. The method includes following steps: modeling jumping cloth through APDL; defining material attributes of the jumping cloth, and valuing initial elastic modulus for the jumping cloth; performing grid division on a jumping cloth model by adopting a mode of mapping division through triangular units; utilizing displacement constraint to lift a central point of the jumping cloth by 0.4M; fully constraining surrounding displacement of the jumping cloth, and fixing all lines on the outer side ofthe round jumping cloth; applying temperature load on the round face of the jumping cloth to simulate prestress; updating coordinates of the jumping cloth: updating origin coordinates to coordinates after the temperature load is applied; restoring actual elastic modulus of a material; utilizing loop statement to execute steps (5), (6) and (7), wherein loop iteration is performed for 20 times in total; finishing shape-finding, applying actual working condition load, and solving. By the method, workload of shape-finding analysis can be lowered effectively, and accuracy of geometric shape of thejumping cloth in an initial state can be improved.

Description

technical field [0001] The invention relates to the field of data simulation, in particular to a trampoline jumping cloth form-finding method based on finite element analysis. Background technique [0002] Existing cloth jumping form-finding uses stress application or multi-key point displacement lifting, which is relatively cumbersome. [0003] Multi-key point displacement promotion has high requirements for point selection. For different types of fabric jumping, point selection methods are different, which is not universal. Stress application needs to consider the applied stress value, and the amount of calculation has certain requirements. Contents of the invention [0004] In order to solve the shortcomings of the above-mentioned existing trampoline jumping cloth form-finding technical solutions, the present invention proposes a trampoline jumping cloth form-finding method based on finite element analysis. [0005] Technical scheme of the present invention is realized...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23G06F2119/06
Inventor 姜荣升刘勃刘善亮袁涛王士刚
Owner 青岛海聚智能创新科技有限公司
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