Method for Obtaining Modulus of Elasticity of Plate Members

Abstract

The invention discloses a method for obtaining the modulus of elasticity of a plate-shaped member, which includes the following steps: S10: Establish three-point force test conditions to obtain the pressure P on the plate-shaped member and the pressure P generated based on the pressure P Deflection Umax; S20: Obtain the relational formula of elastic modulus E, pressure P, and deflection Umax of the plate-shaped member based on the plate and shell theory; S30: Calculate the elastic modulus E of the plate-shaped member based on the pressure P and deflection Umax. The invention obtains the elastic modulus of the plate-shaped member by introducing the calculation formula of the plate-shell theory, so that the sample size is not limited by the width of ASTM and GB test specifications, and the range of the measurable object size is wider. The calculation process of the elastic modulus takes into account the influence of the width of the plate-shaped member on the elastic modulus, so that the calculated elastic modulus is closer to the real elastic modulus.

Description

technical field [0001] The invention relates to the technical field of engineering, in particular to a method for obtaining the modulus of elasticity of a plate-shaped component. Background technique [0002] It is easy to understand that the mechanical properties of plate-like components used in electronic equipment are often subjected to external forces or impacts when the electronic equipment is in use, especially the elastic modulus of the plate-shaped components. [0003] In the prior art, the elastic modulus of the plate-shaped member is obtained by combining the three-point force test and the theoretical formula, wherein, the applied theoretical formulas are mostly various transformed beam theoretical formulas, which leads to the obtained The modulus of elasticity of the plate-shaped member does not consider the influence of the width of the plate-shaped member on deformation (in ASTM and GB test specifications, the width of the plate-shaped member is limited to a sma...

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Problems solved by technology

[0003] In the prior art, the elastic modulus of the plate-shaped member is obtained by combining the three-point force test and the theoretical formula, wherein, the applied theoretical formulas are mostly various transformed beam theoretical formulas, which leads to the obtained The modulus of elasticity of the plate-shaped member does not consider the influence of the width of the plate-shaped member on deformation (in ASTM and GB test specifications, the width of the plate-shaped member is limited to a small range, which makes the elasticity of the plate-shaped member The modulus is considered to be obtained without considering the width parameter) and differs greatly from the actual elastic modulus, that is, the accuracy of the obtained elastic modulus of the plate-shaped member is very poor

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