GATE ME 2019 Set 1 — Question 35
Go beyond PYQs with Success TrackerAI-powered personalised practice and doubt support. Unlimited practice on eligible plans; AI usage limits apply.NAT+1 / -0EasyMechanical Properties & Stress-StrainStructure & PropertiesEngineering MaterialsPlastic Deformation & Yield CriteriaFormingManufacturing Processes
Engineering Materials → Forming → Mechanical Properties & Stress-Strain
Last updated
Question
Consider the stress-strain curve for an ideal elastic-plastic strain hardening metal as shown in the figure. The metal was loaded in uniaxial tension starting from O. Upon loading, the stress-strain curve passes through initial yield point at P, and then strain hardens to point Q, where the loading was stopped. From point Q, the specimen was unloaded to point R, where the stress is zero. If the same specimen is reloaded in tension from point R, the value of stress at which the material yields again is _____ MPa.
Correct answer
210 to 210
Solution
For an ideal elastic-plastic strain hardening material, when it is loaded beyond the initial yield point to a point in the strain-hardening region, it undergoes plastic deformation. Upon unloading from , the material follows an elastic path parallel to the initial elastic region . When reloaded from point , it will follow the same elastic path back to point . The material will only begin to yield again when the stress reaches the maximum stress level it had previously experienced, which is the stress at point . From the provided stress-strain curve, the stress at point is MPa. Therefore, the new yield stress is MPa.
Continue learning with Success Tracker
A step still unclear? Work through it with support
Use Success Tracker to ask about the reasoning, then try another GATE ME question to check your understanding.
AI-powered practice· Unlimited practice on eligible plans
- PYQs with solutions
- Attempt available previous-year questions, then compare your reasoning with the worked solution. Coverage varies by stream.
- Practice that adapts
- Choose a topic, work on weaker areas and bookmark questions to revisit. Your attempts feed your progress tracking.
- AI doubt support
- Ask follow-up questions about a step or concept while practising, instead of stopping at the final answer.
Unlimited practice is available on eligible plans. Free practice and AI usage have limits; check the current plan allowances before choosing.
This page stays readable without an account. AI responses can be wrong; check them against the solution and source material.
More questions on Forming
2026 Set 1 Q30In relation to metal casting defects, match the following | Defect | Description | | :--- | :--- |…2026 Set 1 Q32A work piece is to be firmly held in a fixture. It is to be machined by using a plain slab milling…2026 Set 1 Q59In a deep drawing operation of a rectangular sheet metal, stretching in length results in…2026 Set 1 Q62A metal has FCC crystal structure with 2.71 g/cm of density and 26.98 g/mol of atomic weight.…2026 Set 1 Q63During orthogonal turning by using a single point cutting tool, feed rate is 0.24 mm/rev. The uncut…