Strain field reconstruction visualization method and system based on load strain linear superposition
A linear superposition, strain field technology, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve the problem of limited engineering practicability and application scope, not suitable for complex structure strain reconstruction, inverse finite element method solution speed Fast and other problems, to achieve high engineering application value, achieve the effect of full-field strain monitoring of the structure, and make up for the insufficient number of pastes
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Embodiment 1
[0040] Such as figure 1 As shown, Embodiment 1 of the present disclosure provides a three-dimensional visualization method for beam strain field reconstruction based on linear superposition of load and strain, including the following steps:
[0041] Step 1: Carry out unit mesh division for the beam structure and calibrate the load area. Based on the concentrated force of 5000N, extract the strain of the unit nodes under the action of different load application positions, form a strain matrix of finite points under the action of different load positions and Establish a full-field strain response matrix;
[0042] Step 2: According to the finite element simulation results, a fiber grating sensor network is constructed on the surface of the beam structure in a manner that each circular hole is symmetrically arranged up and down;
[0043] Step 3: collect the strain value of the fiber Bragg grating sensor (FBG) on the surface of the beam under the static load, and obtain the column...
Embodiment 2
[0077] Embodiment 2 of the present disclosure provides a strain field reconstruction visualization system based on linear superposition of load and strain, including:
[0078] The data acquisition module is configured to: acquire beam parameter data and beam surface strain data;
[0079] The visualization update module is configured to: obtain the full-field strain value according to the acquired data, and map the full-field strain value to the unit grid node of the finite element model of the beam for visual update of the beam strain field;
[0080] Among them, the calculation of the full-field strain value includes:
[0081] According to the beam surface strain data, the strain response column vector is obtained; according to the obtained beam parameter data, the strain response matrix of the finite element node and the structure full-field strain response matrix are obtained; according to the strain response column vector and the strain response matrix of the finite element...
Embodiment 3
[0084] Embodiment 3 of the present disclosure provides a computer-readable storage medium, on which a program is stored. When the program is executed by a processor, the strain field reconstruction visualization method based on linear superposition of load and strain as described in Embodiment 1 of the present disclosure is realized. in the steps.
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