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Ansys - Linear and Nonlinear Buckling Applications
Rating: 4.6 out of 5(27 ratings)
139 students

Ansys - Linear and Nonlinear Buckling Applications

Linear and Nonlinear Buckling Method
Created byBurak BALLI
Last updated 1/2022
English

What you'll learn

  • Linear Buckling
  • Non-Linear Based Eigenvalue Buckling
  • Non-Linear Buckling
  • Newton-Raphson Method
  • Arc-Length Method
  • Post Buckling
  • Design Based on Buckling

Course content

6 sections • 14 lectures • 2h 27m total length

  • Introduction to Buckling15:52

    Learn how structures become unstable under compression, identify stable vs unstable behavior, and compare linear eigenvalue, nonlinear buckling, and nonlinear transient analyses to predict the critical load.

  • Linear Buckling8:15

    Discover how linear buckling analyzes stability and predicts critical loads using eigenvalue analysis, while noting its limitations with geometrical non-linearity and nonlinear effects that can overestimate capacity.

  • Eigenvalue Buckling10:14

    Evaluate stability with eigenvalue buckling, comparing elastic, linear methods with non-linear approaches. Use static stress results as input and apply load multipliers to predict critical loads, noting non-conservative tendencies.

  • Linear Buckling Example - 114:10

    Compare linear eigenvalue buckling results for a 10 m beam using hand calculations and ANSYS Workbench, focusing on boundary conditions, shell versus solid modeling, and critical load.

  • Linear Buckling Example - 27:57

    Examine linear eigenvalue buckling of a five-meter box-profile model with a top-edge connection, applying static analysis and boundary conditions to reveal critical loads and mode shapes, and discuss nonlinear considerations.

Requirements

  • Fundamentals of Ansys Workbench
  • Fundamentals of Static Structural

Description

--- Check My Website (importfea) ---

We are going to examine the topics of linear and nonlinear buckling. Since I have already prepared an introductory course for Ansys, we are going to focus only on the topic of buckling. In the course, we are going to see linear buckling, nonlinear buckling, post-buckling, and arc-length method.

Version 2021R1 was used in the tutorial.

We can gather the tutorial under 4 topics as linear buckling, nonlinear based eigenvalue buckling, nonlinear buckling, and post-buckling. The tutorial only includes the 4 main topics.

In the first topic, we are going to focus on the questions of what is buckling and why is it important. Then, we are going to examine the topic of eigenvalue buckling. We are going to be learning the formulations and calculations for the critical load. We are also going to check the advantages and disadvantages of linear buckling and be learning why we need nonlinear buckling analysis. We are going to examine how to design based on buckling taking advantage of fast computing time in linear buckling.

In the second topic, we are going to increase the accuracy with nonlinear-based linear buckling analysis. We are going to perform a nonlinear static analysis and, eigenvalue buckling analysis based on the results of nonlinear static analysis. Since the formulation and calculations for critical load are going to be changed, we are going to learn the formulations again.

In the third topic, we are going to introduce nonlinear buckling analysis. Since nonlinear buckling analysis requires more experience and more computing time, it is going to be harder if we compared the linear buckling analysis. Firstly, we are going to learn nonlinear settings and then learn how to perform nonlinear buckling analysis. We are going to discuss the convergence problems. We are going to learn how to find critical load from the results of nonlinear buckling analysis.

In the last topic, we are going to examine the behavior after buckling that we can't capture on nonlinear buckling analysis. At the commencement of the buckling, nonlinear buckling analysis start to divergence and can't solve the model. After the commencement of the buckling, we are going to learn how to capture the buckling behavior by using stabilization settings.

In addition, we are going to learn how to use the Arc-Length method which is much more effective than the Newton-Raphson method, and learn how to use the command in Mechanical.

Best Regards,


Who this course is for:

  • Mechanical Engineers or Students
  • Structural Engineers or Students
  • Mechatronic Engineers or Students
  • Metallurgy and Materials Engineers or Students
  • Everyone who Interested in Finite Element Method
  • Everyone who Interested in Buckling

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