FE Mechanical Exam Prep 84, Failure Theories and Design Safety Factors

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - To always identify the material as brittle or ductile before selecting a failure theory. - The Distortion-Energy (von Mises) theory is the most accurate predictor of yielding for ductile materials. - The Maximum Shear Stress (Tresca) theory is a more conservative approach for ductile materials. - For brittle materials, the Maximum Normal Stress (Rankine) theory must be used, checking against both ultimate tensile and compressive strengths. - The factor of safety is always calculated as the material's relevant strength (yield or ultimate) divided by the calculated stress from the appropriate failure theory. For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep