[Midas Gen][ABAQUS][Midas2Abaqus] Verification Example Eigen-15: Eigenvalue analysis of simply supported thin annular plate [ Midas Gen 验证实例Eigen-15: 简支薄圆板的特征值分析]

【1】Problem Description

A simply supported thin annular plate is analyzed to determine the first 10 natural frequencies. Determine the natural frequencies and mode shapes. ( This model is original come from Midas Gen Verification Example – Eigen-15. )

【2】Midas Gen Model

【3】Midas 2 Abaqus Model

【4】Abaqus Model

【5】Midas Gen  Analysis Results

(1) Midas Gen Mode 1

(2) Midas Gen Mode 2

(3) Midas Gen Mode 4

(5) Midas Gen Mode 6

(6) Midas Gen Mode 7

【6】Abaqus  Analysis Results

(1)  Mode 1

(2) Mode 2

(3) Mode 4

(4) Mode 6

(5) Mode 7

【7】Comparison of Results

Frequency ( Unit: Hz)

Mode Theoretical Midas Gen Abaqus
1 1.87 1.857 1.869
2、3 5.137 5.141 5.192
4、5 9.673 9.658 9.829
6 14.85 14.47 15.076
7 15.573 15.459 15.905

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