Equivalent Modelling Method and Testing Verification for Insulated Containers with Honeycomb Sandwich Structure
This article combines the means of FEA and testing,studies the equivalent modelling method for honeycomb sandwich structure and proposes a new equivalent modelling method by layer stacking.Honeycomb sandwich panel samples are used for bending performance test.According to the equivalent stiffness theory,when the displacement values of the sample under different loads in the solid unit model are the same as the displacement values in the test,the equivalent modulus parameter of the honeycomb sandwich structure is obtained.The modelling method by composite layer stacking of the sample is adopted.When the deviation of the displacement values in the test from the simulated displacement values in the layer stacking model is within the allowable range,the correctness of this method is verified.This article also compares the displacement values and the stress values in the solid model,in the layer stacking equivalent model and in the test conditions of the insulated container,and the result shows that the deviation of the displacement values and the stress values in the test from the calculation results of the layer stacking equivalent model and the solid model is within 15%.Through simulation,testing,comparison and analysis described in this article,it turns out that the equivalent modelling method by layer stacking can simulate the actual honeycomb sandwich structure very well and greatly improve the efficiency of finite element modelling and analysis.
insulated containerhoneycomb sandwich structureequivalent modelling by layer stackingtest
万方数据
维普
