[Midas Gen][ABAQUS][Midas2Abaqus] Verification Example GNL-1: Geometric nonlinear analysis of a high arch structure [ Midas Gen 验证实例 GNL-1: 高拱结构的几何非线性分析]

【1】Problem Description ( Midas Gen’s Verification Examples GNL-1:  Geometric nonlinear analysis of a high arch structure)

Obtain load-displacement relation curves at the point of load application on a 100 m radius,
high arch structure. Carry out a geometric nonlinear analysis for the results.

Structural geometry and analysis model

【2】MODEL Properties

100 m radius

Beam element

Modulus of elasticity E = 6.0 × 10 6 Pa
Poisson’s ratio
ν = 0.3

Element Property
Area A = 1.0 m 2
Moment of inertia I yy = 0.16667 m 4

Boundary Condition
Nodes 1 : Constrain Dx, Dz. & Ry
Nodes 51 : Constrain Dx & Dz

Load Case
A concentrated load, 1000 N is applied to the node 26 in the (-)Z direction.

【3】Midas Gen Model

【4】Midas 2 Abaqus Model

【5】Abaqus Model

【6】Abaqus Results

(1)Increment 1

(2)Increment 7

(3)Increment 16

(4)Increment 24

【7】Comparison of Results

Displacement of node 26

PS. Abaqus 的弧长法算到峰值附近就不收敛了,具体后续再详细原因。 也欢迎做个相关分析的小伙伴能多多指教一下。

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