Understanding and Dealing with Artificially High Stress Using Ansys Mechanical — Lesson 3

In this video lesson, we will show why artificially high stresses arise in structural finite element models. Typical cases of these are from point loads and constraints, re-entrant corners, over-constrain of the model, and sharp corners in contact. Knowing to look out for these and understanding how to address them will better equip us to use our simulation tools and interpret results properly. We deliver a short lecture, then get into Ansys Mechanical to illustrate the concepts on a mechanical part. // INTERESTED IN MORE? Visit Ansys Innovation Courses for free courses, including videos, handouts, simulation examples with starting files, homework problems and quizzes. Visit today → // DOWNLOAD FREE ANSYS SOFTWARE Ansys offers free student product downloads for homework, capstone projects, student competitions, online learning and more! Download today → // QUESTIONS ABOUT THIS VIDEO OR USING ANSYS? Get help from Ansys experts and peers through the Ansys Learning Forum. Search for answers to common questions, browse discussion categories or ask your own question. Visit today → // STAY IN THE LOOP Follow our Ansys Academic LinkedIn showcase page for updates on learning resources, events, job opportunities, cutting-edge simulation content and more! Follow today → 0:00 - Intro 1:50 - Most Common Cases for Artificially High Stresses 2:19 - Artificially High Stress Due to Point Loads or Constraints 3:48 - Artificially High Stress Due to Sharp Corners or Edges 5:50 - Artificially High Stress Due to Contact with Sharp Corners or Edges 6:17 - Artificially High Stress Due to Over-Constraints from Improper Boundary Conditions 8:52 - Stress Singularity vs Stress Riser 11:18 - Specifying Local Mesh Sizing 15:47 - Scoping the Stress to the Region of Interest 21:17 - Applying Cylindrical Support 22:00 - Applying Elastic Support