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Related Concept Videos

Bending of Curved Members - Strain Analysis01:14

Bending of Curved Members - Strain Analysis

294
The mechanics of deformation in curved members, such as beams or arches, under bending moments, involve complex responses. When such a member, symmetric about the y-axis and shaped like a segment of a circle centered at point C, is subjected to equal and opposite forces, its curvature and surface lengths change significantly. This alteration results in the shift of the curvature's center from C to C', indicating a tighter curve.
The important part of bending analysis for such a member...
294
Deformations in a Symmetric Member in Bending01:18

Deformations in a Symmetric Member in Bending

314
When analyzing the deformation of a symmetric prismatic member subjected to bending by equal and opposite couples, it becomes clear that as the member bends, the originally straight lines on its wider faces curve into circular arcs, with a constant radius centered at a point known as Point C. This phenomenon helps to understand the stress and strain distribution within the member more clearly.
When the member is segmented into tiny cubic elements, it is observed that the primary stress...
314
Transformation of Plane Strain01:12

Transformation of Plane Strain

293
When analyzing elongated structures like bars subjected to uniformly distributed loads, it is essential to understand the transformation of plane strain when coordinate axes are rotated. This transformation helps to assess how material deformation characteristics vary with orientation, which is crucial in materials science and structural engineering.
Under plane strain conditions, typical for members where one dimension significantly exceeds the others, deformations and resultant strains are...
293
Deformation of Member under Multiple Loadings01:11

Deformation of Member under Multiple Loadings

257
When a rod is made of different materials or has various cross-sections, it must be divided into parts that meet the necessary conditions for determining the deformation. These parts are each characterized by their internal force, cross-sectional area, length, and modulus of elasticity. These parameters are then used to compute the deformation of the entire rod.
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
257
Temperature Dependent Deformation01:12

Temperature Dependent Deformation

233
In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
233
Plastic Deformations01:14

Plastic Deformations

202
It is essential to understand how structural members behave under plastic deformation when the bending stress exceeds the material's yield strength. This state of deformation permanently alters the shape of the member, in contrast to the linear elastic behavior observed before yielding. The strain at any point in the member is expressed in terms of maximum strain. Notably, the neutral axis, which coincides with the centroid during elastic bending, shifts away from the centroid under plastic...
202

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Related Experiment Video

Updated: Oct 20, 2025

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads
07:58

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads

Published on: July 25, 2025

264

A Geometry-Based Welding Distortion Prediction Tool.

Ignacio Granell1, Abel Ramos2, Alberto Carnicero1

  • 1Institute for Research in Technology, Pontifical Comillas University, Santa Cruz de Marcenado 26, 28015 Madrid, Spain.

Materials (Basel, Switzerland)
|September 10, 2021
PubMed
Summary

This study validates an automated welding distortion prediction tool, achieving 80-98% accuracy. The Python-scripted Ansys tool simplifies complex simulations for engineers, enabling precise distortion analysis in manufacturing.

Keywords:
Ansysfinite element methodthermoelastoplastic methodwelding distortionwelding simulation

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Area of Science:

  • Computational mechanics
  • Manufacturing engineering
  • Materials science

Background:

  • Predicting welding distortion traditionally requires specialized expertise in simulation software, material properties, and complex analysis settings.
  • Existing methods for simulating welding-induced distortion are often time-consuming and require significant user input, limiting accessibility for engineers.

Purpose of the Study:

  • To validate an automated simulation tool developed using Python scripting within Ansys for predicting welding distortion.
  • To streamline the simulation model preparation process, reducing the number of required user inputs for distortion analysis.
  • To enable accurate prediction of welding-induced distortion for various geometries using an automated setup.

Main Methods:

  • Development and validation of an automated simulation setup using Python scripting in Ansys.
  • Utilized a thermomechanical loosely coupled analysis approach.
  • Incorporated element birth and death technology for simulating the welding process and predicting distortions.

Main Results:

  • The automated simulation tool demonstrated high accuracy in predicting welding distortion, with results ranging from 80% to 98%.
  • The tool accepts any geometry from CAD software, offering significant flexibility in modeling different shapes and sizes.
  • The automated setup successfully simplifies the process, making welding-induced distortion prediction more accessible to simulation and manufacturing engineers.

Conclusions:

  • The validated automated simulation tool significantly enhances the ability to predict welding distortion accurately and efficiently.
  • The Python-scripted Ansys tool democratizes advanced simulation capabilities, empowering engineers to optimize manufacturing processes.
  • This approach offers a robust solution for managing geometric complexity and improving the precision of distortion predictions in welding.