[Midas Gen][ABAQUS][Midas2Abaqus] Midas Gen Verification Example Eigen-9: Eigenvalue and static analysis of a 5- level pyramid building under lateral loads [ Midas Gen 验证实例 Eigen-9: 5层金字塔结构的特征值分析及侧向水平力静力分析]

【1】Problem Description ( Midas Gen Verification Example Eigen-9: Eigenvalue and static analysis of a 5- level pyramid building under lateral loads) Perform the eigenvalue analysis of a pyramid building. Calculate …

[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, …

[Midas Gen][ABAQUS][Midas2Abaqus] Verification Example Eigen-13: Eigenvalue analysis of cantilever cylindrical vault [ Midas Gen 验证实例 Static-13: 圆柱形拱顶特征值分析]

【1】Problem Description ( Midas Gen’s Verification Examples Static-13:  Eigenvalue analysis of cantilever cylindrical vault) 【2】MODEL Properties Dimension Radius 0.6096 m Element Plate element Material Modulus of elasticity E = 2.0658×10 5 …

[Abaqus][Midas][Midas2Abaqus] Midas Gen 教程12 – 单层网壳屈曲分析[Buckling analysis of a single layer reticulated dome]

  (马上更新…..) 注释 ( Comments )   ( 如果您发现有错误,欢迎批评指正。邮箱:jidong_cui@163.com . 如果您喜欢这篇博文,请在上面给我 点个赞 吧!         ( If you found any mistakes in the post, please let me know. Email : jidong_cui@163.com. If you like this posts, please give me a “thumbs up“ rating …

[优化][ABAQUS][Midas2Abaqus] Topology Optimization of a short cantilever beam by Abaqus [短悬臂梁拓扑优化分析算例]

又一个简单的优化小例子, PS. 某人答对了结果 。 【1】Midas Gen Model 【2】Midas2Abaqus Model 【3】Abaqus Model 【4】Optimization Results 优化目标:刚度最大化。 约束条件:体积优化 30%。 最终结果是一个三角形。 注释 ( Comments )   ( 如果您发现有错误,欢迎批评指正。邮箱:jidong_cui@163.com . 如果您喜欢这篇博文,请在上面给我 点个赞 吧!         ( If you found any mistakes in the …

[优化][ABAQUS][Midas2Abaqus] Topology Optimization of a clamped-clamped beam by Abaqus [两端固支梁拓扑优化分析算例]

做个简单的优化小例子,后续有时间继续再做深入研究吧。这些都是拓扑优化届最初级最初级的小例子。很多书本都可以看到。 先从最简单的拓扑优化开始。后续陆续分享一些实际工程的优化案例,贴近工程的一些优化思路及软件开发应用案例。 【1】Midas Gen Model 【2】Midas2Abaqus Model 【3】Abaqus Model 【4】Optimization Results 优化目标:刚度最大化。 约束条件:体积优化 50%。 (1) Step 5 (2) Step 10 (3) Step 25 (4) Strain Energy 到25步后,结构基本稳定。可以看出优化后的结构的轮廓。 后续再继续深入研究。 注释 ( Comments ) …

Abaqus 出现“The area of XXX elements is zero, small, or negative”错误提示

Abaqus “提示单元面积为零,很小或者为负数” 错误,如下所示: The area of 2500 elements is zero, small, or negative. Check coordinates or node numbering, or modify the mesh seed. The elements have been identified in element …

[Midas Gen][ABAQUS][Midas2Abaqus] Verification Example Static-31: Elliptic membrane under uniformly distributed load [ Midas Gen 验证实例 Static-31: 椭圆薄膜受均布荷载]

【1】Problem Description ( Midas Gen’s Verification Examples Static-31:  Elliptic membrane under uniformly distributed load) An elliptical membrane of thickness, t and geometrical properties is subjected to a uniformly distributed outward pressure. …

[Midas Gen][ABAQUS][Midas2Abaqus] Verification Example GNL-6: Snap-back Nonlinear problem [ Midas Gen 验证实例GNL-6: Snap-back 非线性问题]

【1】Problem Description (GNL-6: Snap-back Nonlinear problem from Midas Gen’s Verification Examples) Draw the load-displacement graph. 【2】MODEL Properties Dimension Length 2500 m Element Truss element Material Modulus of elasticity E = …

[Midas Gen][ABAQUS][Midas2Abaqus] Verification Example GNL-5: Snap-through Analysis of simply 2D truss [ Midas Gen 验证实例GNL-5: 2D桁架的阶跃分析]

【1】Problem Description (GNL-5: Snap-through Analysis of simply 2D truss from Midas Gen’s Verification Examples) A truss element is subjected to a vertical load at the node 2. Draw the load-displacement …

[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 …

[Midas Gen][ABAQUS][Midas2Abaqus] Tut-3: Web-opening Detail Analysis [ Midas Gen tut-3: 腹板开洞梁截面详细分析]

  ( 马上更新…)     注释 ( Comments )   ( 如果您发现有错误,欢迎批评指正。邮箱:jidong_cui@163.com . 如果您喜欢这篇博文,请在上面给我 点个赞 吧!         ( If you found any mistakes in the post, please let me know. Email : jidong_cui@163.com. If you like this posts, please give …

[Midas Gen][ABAQUS][Midas2Abaqus] Tut-4: Hammerhead Pier [ Midas Gen tut-4: 锤头桥墩]

【1】Problem Description (from ) 【2】Midas Gen Model [ Tut-4: Two column hammerhead Pier from Midas Gen’s Tutorials ] Load Case – Vertical Load: Load Case – Seismic Load: 【3】Midas 2 …

[Midas Gen][ABAQUS][Midas2Abaqus] Tut-2: Plant Structure[ Midas Gen tut-2: 厂房结构]

(马上更新…)         注释 ( Comments )   ( 如果您发现有错误,欢迎批评指正。邮箱:jidong_cui@163.com . 如果您喜欢这篇博文,请在上面给我 点个赞 吧!         ( If you found any mistakes in the post, please let me know. Email : jidong_cui@163.com. If you like this posts, please give …

[Midas Gen][ABAQUS][Midas2Abaqus] Tut-1: 3-D Simple 2–Bay Frame [ Midas Gen tut-1: 单层两跨三维框架]

【1】Problem Description ( This model is original come from Midas Gen’s Tutorials – Tut-1. ) 【2】Midas Gen Model [ Tut-1: 3-D Simple 2–Bay Frame from Midas Gen’s Tutorials ] Load …

[Midas Gen][ABAQUS][Midas2Abaqus] Static-11: 2-D Plane Truss [Static 11: 2-D 平面桁架 Verification Examples]

【1】Problem Description Determine the vertical displacements of a plane truss structure subjected to concentrated loads.[ Static-11 from the Verification Example of Midas Gen] 【2】Midas Gen Model [ Static-11 from the …

[ABAQUS][FEM][Midas] Buckling Analysis of Steel Box Beam [钢箱梁的特征值屈曲分析]

Buckling Analysis of Steel Box Beam [钢箱梁的特征值屈曲分析] 【1】Midas Gen Model 【2】Midas2Abaqus 【3】Abaqus Model 【4】Midas Gen Results (1) Buckling Mode 1 (2) Buckling Mode 2 (3) Buckling Mode 3 (4) Buckling …

[ABAQUS][Midas][FEM] Modal Analysis of Steel Box Beam [钢箱梁的模态分析]

Modal Analysis of Steel Box Beam [钢箱梁的模态分析] 【1】Midas Gen model 【2】Midas2Abaqus Model 【3】Abaqus Model 【4】Midas Gen Results (1) Mode 1 (2) Mode 2 (3) Mode 3 【5】Abaqus Results (1) Mode …

[FEM][Abaqus][Midas][分析] Midas2Abaqus模型转换工具

    (别急,马上就更新。。。。。)   注释 ( Comments )   ( 如果您发现有错误,欢迎批评指正。邮箱:jidong_cui@163.com . 如果您喜欢这篇博文,请在上面给我 点个赞 吧!         ( If you found any mistakes in the post, please let me know. Email : jidong_cui@163.com. If you like this posts, please give me …

[Midas Gen][结构分析] Midas Gen中基底反力的统计

(别急,马上就更新。。。。。)   注释 ( Comments )   ( 如果您发现有错误,欢迎批评指正。邮箱:jidong_cui@163.com . 如果您喜欢这篇博文,请在上面给我 点个赞 吧!         ( If you found any mistakes in the post, please let me know. Email : jidong_cui@163.com. If you like this posts, please give me a “thumbs up“ rating …

[Midas Gen][结构分析] 带加劲肋钢板有限元分析

工字型钢为主梁,槽钢为铰接次梁,铺设钢板,钢板铰接支撑在钢梁上。左模型钢板底设置角钢加劲肋,间距500mm,右模型为纯钢板。整个结构尺寸为1000mmx2800mm,钢板施加竖向均布荷载。 整体模型 钢梁 钢板竖向位移 (左模型,角钢的最大竖向位移为2mm,最大相对位移为1.5mm,角钢挠度为 1/(1.5/1000)=1/666;钢板的最大竖向位移为2.2mm,分布于跨中,最大相对位移为0.3mm,相应的挠度为1/(0.3/500)=1/1666;右模型:跨中位移最大,最大竖向位移为17.4mm,最大相对位移为17mm,相应的板的挠度为 1/(17/1000)=1/58。) 钢板的Von-Mises应力 (左模型:钢板的最大应力为60Mpa,主要集中在角钢端部的局部范围;右模型:钢板的最大应力为83Mpa,主要集中在跨中较大范围。) 注释 ( Comments )   ( 如果您发现有错误,欢迎批评指正。邮箱:jidong_cui@163.com . 如果您喜欢这篇博文,请在上面给我 点个赞 吧!         ( If you found any mistakes in the post, please let me know. Email : jidong_cui@163.com. If you like …

[有限元][编程][日记] PFSAP:平面框架弹性静力分析程序

(旧博客(2013年)中的日记,当初学习有限元时候做的笔记,现转移到 www.jdcui.com 备份!!!) 最近一段时间决定开始认真地去学有限元了,基本的理论应该认真地去学好,很重要,没有理论为前提,研究很难深入下去,且根本无法去应用,更别说把程序当成工具了,简直就是被程序玩弄。所以,要多看书,多思考,多动手, 学习基本理论。 为此,初学FEM的过程中,写了个十分十分简单的小程序:PFSAP,即平面框架结构分析程序。前两天刚刚完成。PFSAP包括简单的前后处理,通过图形操作建立模型,可以进行一般的平面桁架、刚架、组合结构的静力分析,类似结构力学求解器,当然功能简单很多。做这个东西主要是想体验一下。以下是程序界面: 下面测试一个简单的桁架例子,参考教材 — 同济大学朱慈勉老师编的《结构力学》下册,例8-1桁架例子。 (1)建立模型,指定支座,施加节点荷载。 (2)分析,查看变形图 (3)查看轴力图 (3)查看支座反力 记录一下,改天再详细测试一下其他的例子 …… 小结:学习有限元,动手实践很重要,实践包括用通用的有限元程序去操作,也包括自己编些小程序来体验;因为公式都是那样,不同的书虽然讲得有深有浅,但是当你看多了以后,看懂了以后,再继续看下去单纯从书面来获得的东西就越来越少了,这时候如果能动手实践一下,那么理解会更加深刻,也能够明白里面的一些比较关键的东西。所以我认为,学任何东西都有下面一个过程:听懂->看懂->做出来->创造。这几个过程都叫“懂”了,但是懂的深度是逐渐加深的,当然要想向着更高的高度发展,要付出越来越多的精力和努力。 附上【Video】 注释 ( Comments )   ( 如果您发现有错误,欢迎批评指正。邮箱:jidong_cui@163.com . 如果您喜欢这篇博文,请在上面给我 点个赞 吧!         ( If you found any mistakes in the post, …

【弹塑性分析笔记】 ABAQUS弹塑性楼板损伤结果解读

结构弹塑性分析可以较好地反映结构的薄弱部位。大震弹塑性分析和小震设计、中大震拟静力分析具有一定的可比性。如图是YJK的拟静力楼板应力分析结果及ABAQUS大震分析的损伤结果,弹塑性分析反映了结构的薄弱部位。

[OpenSees][研究][二次开发]Os-PrePost —— A pre and post-processor for OpenSees [Os-PrePost—— OpenSees前后处理程序]

[研究][OpenSees][软件]Os-PrePost —— A pre and post-processor for OpenSees [Os-PrePost—— OpenSees前后处理程序],from www.jdcui.com, OpenSees