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Discussion

【讨论13-1】将传热问题与变形体问题进行比较,讨论传热问题的第一类边界条件$BC\left( {{S_1}} \right)$与变形体问题$BC\left( u \right)$的对应关系,以及传热问题的第二类边界条件$BC\left( {{S_2}} \right)$与变形体问题$BC\left( p \right)$的对应关系。

Discussion 13-1We want to compare a heat transfer problem and a deformed body problem. Please discuss boundary conditions of the first kind BC(S1) for heat transfer problems and the ones for a deformed body problems BC(u), what is their relationship? Also discuss and point out the relationship between boundary conditions of the second kind BC(S2) for heat transfer problems and the ones for a deformed body problems BC(p).

【讨论13-2】讨论并尝试构建针对热应力问题的最小势能原理。

Discussion 13-2Discuss and also try to establish the principle of minimum potential energy for thermal stress problems.




下一节:Video I-1

返回《Finite Element Method (FEM) Analysis and Applications》慕课在线视频列表

Finite Element Method (FEM) Analysis and Applications课程列表:

0、Course summary

-Finite element, infinite capabilities

--Video

1、Introduction

-1.1 Classification of mechanics:particle、rigid body、deformed body mechanics

--Video 1.1

--1.1 Test

-1.2 Main points for deformed body mechanics

--Video 1.2

--1.2 Test

-1.3 Methods to solve differential equation solving method

--Video 1.3

--1.3 Test

-1.4 Function approximation

--Video 1.4

--1.4 Test

-1.5 Function approximation defined on complex domains

--Video 1.5

--1.5 Test

-1.6 The core of finite element: subdomain function approximation for complex domains

--Video 1.6

--1.6 Test

-1.7 History and software of FEM development

--Video 1.7

--1.7 Test

-Discussion

--Discussion

-Homework

2、Finite element method of bar system based on direct stiffness method

-2.1 Principles of mechanic analysis of springs

--Video 2.1

--2.1 Test

-2.2 Comparison between spring element and bar element

--Video 2.2

--2.2 Test

-2.3 Coordinate transformation of bar element

--Video 2.3

--2.3 Test

-2.4 An example of a four-bar structure

--Video 2.4

--2.4 Test

-2.5 ANSYS case analysis of four-bar structure

--Video 2.5

--ANSYS

-Discussion

--Discussion

3、Mechanical description of deformed bodies with complex geometry 1

-3.1 Mechanical description and basic assumptions for deformed body

--Video 3.1

--3.1 Test

-3.2 Index notation

--Video 3.2

--3.2 Test

-3.3 Thoughts on three major variables and three major equations

--Video 3.3

--3.3 Test

-3.4 Test

-3.4 Construction of equilibrium Equation of Plane Problem

--Video 3.4

-3.5 Test

-3.5 Construction of strain-displacement relations for plane problems

--Video 3.5

-3.6 Test

-3.6 Construction of constitutive relations for plane problems

--Video 3.6

-3.7 Test

-3.7 Two kinds of boundary conditions

--Video 3.7

- Discussion

-- Discussion

4、Mechanical description of deformed bodies with complex geometry 2

-4.1 Test

-4.1 Discussion of several special cases

--Video 4.1

-4.2 Test

-4.2 A complete solution of a simple bar under uniaxial tension based on elastic mechanics

--Video 4.2

-4.3 Test

-4.3 The description and solution of plane beam under pure bending

--Video 4.3

-4.4 Test

-4.4 Complete description of 3D elastic problem

--Video 4.4

-4.5 Test

-4.5 Description and understanding of tensor

--Video 4.5

-Discussion

--Discussion

5、Principle of trial function method for solving mechanical equations of deformed body

-5.1 Test

-5.1Main method classification and trial function method for solving deformed body mechanics equation

--Video 5.1

-5.2 Test

-5.2 Trial function method for solving pure bending beam: residual value method

--Video 5.2

-5.3 Test

-5.3How to reduce the order of the derivative of trial function

--Video 5.3

-5.4 Test

-5.4 The principle of virtual work for solving plane bending beam

--Video 5.4

-5.5 Test

-5.5 The variational basis of the principle of minimum potential energy for solving the plane bending

--Video 5.5

-5.6 Test

-5.6 The general energy principle of elastic problem

--Video 5.6

-Discussion

--Discussion

6、Classic implementation and finite element implementation based on trial function method

-6.1Test

-6.1 Classic method and finite element method based on trial function

--Video 6.1

-6.2 Test

-6.2 Natural discretization and approximated discretization in finite element method

--Video 6.2

-6.3 Test

-6.3 Basic steps in the finite element method

--Video 6.3

-6.4 Test

-6.4 Comparison of classic method and finite element method

--VIDEO 6.4

-Discussion

--Discussion

7、Finite element analysis of bar and beam structures

-7.1 Test

-7.1 Construction and MATLAB programming of bar element in local coordinate system

--Video 7.1

-7.2 Test

-7.2 Construction and MATLAB programming of plane pure bending beam element in local coordinate syste

--Video 7.2

-7.3 Construction of three-dimensional beam element in local coordinate system

--Video 7.3

-7.4 Test

-7.4 Beam element coordinate transformation

--Video 7.4

-7.5 Test

-7.5 Treatment of distributed force

--Video 7.5

-7.6 Case Analysis and MATLAB programming of portal frame structure

--Video 7.6

-7.7 ANSYS case analysis of portal frame structure

--Video 7.7

8、Finite element analysis of continuum structure (1)

-8.1 Test

-8.1 Two-dimensional 3-node triangular element and MATLAB programming

--Video 8.1

-8.2 Test

-8.2 Two-dimensional 4-node rectangular element and MATLAB programming

--Video 8.2

-8.3 Test

-8.3 Axisymmetric element

--Video 8.3

-8.4 Test

-8.4 Treatment of distributed force

--Video 8.4

-8.5 MATLAB programming of 2D plane rectangular thin plate

--Video 8.5

-8.6 Finite element GUI operation and command flow of a plane rectangular thin plate on ANSYS softwar

--Video 8.6

-Discussion

--Discussion

9、Finite element analysis of continuum structure (2)

-9.1 Three-dimensional 4-node tetrahedral element and MATLAB programming

--Video 9.1

-9.2 Three-dimensional 8-node hexahedral element and MATLAB programming

--Video 9.2

-9.3 Principle of the isoparametric element

--Video 9.3

-9.4Test

-9.4Numerical integration

--Video 9.4

-9.5 MATLAB programming for typical 2D problems

--Video 9.5

-9.6 ANSYS analysis case of typical 3Dl problem

--Video 9.6

-Discussion

--Discussion

10、Basic properties in finite element method

-10.1Test

-10.1Node number and storage bandwidth

--Video 10.1

-10.2Test

-10.2 Properties of shape function matrix and stiffness matrix

--Video 10.2

-10.3Test

-10.3 Treatment of boundary conditions and calculation of reaction forces

--Video 10.3

-10.4Test

-10.4 Requirements for construction and convergence of displacement function

--Video 10.4

-10.5Test

-10.5C0 element and C1 element

--Video 10.5

-10.6 Test

-10.6 Patch test of element

--Video 10.6

-10.7 Test

-10.7 Accuracy and property of numerical solutions of finite element analysis

--Video 10.7

-10.8Test

-10.8 Error and average processing of element stress calculation result

--Video 10.8

-10.9 Test

-10.9 Error control and the accuracy improving method of h method and p method

--Video 10.9

-Discussion

--Discussion

11、High-order and complex element

-11.1 Test

-11.1 1D high-order element

--Video 11.1

-11.2 Test

-11.2 2D high-order element

--Video 11.2

-11.3 Test

-11.3 3D high-order element

--Video 11.3

-11.4 Test

-11.4 Bending plate element based on thin plate theory

--Video 11.4

-11.5 Test

-11.5 Sub-structure and super-element

--Video 11.5

12、Introduction to the application of finite element analysis (1)

-12.1Test

-12.1 Finite element analysis for structural vibration: basic principle

--Video 12.1

-12.2 Test

-12.2 Case of finite element analysis for structural vibration

--Video 12.2

-12.3 Test

-12.3 Finite element analysis for elastic-plastic problems: basic principle

--Video 12.3

-12.4 Test

-12.4 Finite element analysis for elastic-plastic problems: solving non-linear equations

--Video 12.4

-Discussion

--Discussion

13、Introduction to the application field of finite element analysis (2)

-13.1 Test

-13.1 Finite element analysis for heat transfer: basic principle

--Video 13.1

-13.2 Test

-13.2 Case of finite element analysis for heat transfer

--Video 13.2

-13.3 Test

-13.3 Finite element analysis for thermal stress problems: basic principle

--Video 13.3

-13.4 Test

-13.4 Finite element analysis for thermal stress problems: solving non-linear equation

--Video 13.4

-Discussion

--Discussion

14、Project

-2D problem: finite element analysis of a 2D perforated plate

--Video I-1

-3D problem: meshing control of a flower-shaped chuck

--Video I-2

-Modal analysis of vibration: Modal analysis of a cable-stayed bridge

--Video I-3

-Elastic-plastic analysis: elastic-plastic analysis of a thick-walled cylinder under internal pressur

--Video I-4

-Heat transfer analysis: transient problem of temperature field during steel cylinder cooling process

--Video I-5

-Thermal stress analysis: temperature and assembly stress analysis of truss structure

--Video I-6

-Probability of structure: Probabilistic design analysis of large hydraulic press frame

--Video I-7

-Modeling and application of methods: Modeling and analysis of p-type elements for plane problem

--Video I-8

Discussion笔记与讨论

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