Mesh Woven Fabric with Controlled Bending for Isotropic Deformation
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Solution Overview
Problem
Ion exchange membranes are prone to anisotropic deformation under external loads, leading to non-uniform stress distribution and potential damage due to stress concentration.
Innovation Solution
A mesh woven fabric with controlled bending angles and tensile properties of warp and weft threads, ensuring a bending angle difference of 20% or less, and other deformation-related parameters within specific ranges, allowing for isotropic deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the reinforcing material uses traditional woven fabric with uniform bending angles, then the manufacturing is simple, but the deformation becomes anisotropic causing stress concentration
Solution Approach 1:
The patent applies asymmetry by intentionally creating different bending angles between warp and weft threads in the mesh woven fabric. Specifically, the bending angle of the warp thread is made different from the bending angle of the weft thread at their intersection, with the rate of absolute value of bending angle difference to average bending angle being 20% or less. This asymmetric design enables isotropic deformation characteristics, allowing the fabric to deform uniformly in all directions and distribute stress evenly, thereby improving reliability while managing complexity through controlled asymmetry.
2Stability of the object's composition
If the bending angle difference between warp and weft threads is large, then the deformation is anisotropic, but controlling the bending angle difference within 20% or less requires precise manufacturing control
Solution Approach 1:
The patent applies parameter changes by establishing specific quantitative ranges for bending angles and their differences. The bending angle of each thread is controlled to be 10 degrees or more and 170 degrees or less, with the rate of absolute value of bending angle difference to average bending angle being 20% or less. These parameter specifications transform the qualitative requirement of isotropic deformation into quantifiable manufacturing targets, enabling precise control while maintaining deformation isotropy.
Data Source
AI summary
[Problem] Provided is a mesh woven fabric that allows for isotropic deformation when an external load acts thereon. [Solution] In a mesh woven fabric including a warp thread and a weft thread, a bending angle of the warp thread and a bending angle of the weft thread at an intersection where the warp thread and the weft thread intersect each other are different from each other. A rate of an absolute value of a bending angle difference between the warp thread and the weft thread to an average of the bending angle of the warp thread and the bending angle of the weft thread is 20% or less. At least one of the warp thread and the weft thread can be composed of a synthetic fiber.