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temperature dependant plasticity


i am trying to do temperature dependant plasticity using solver 601 (advanced non linear static) and for this analysis i am using wasplaoy material. but when i giving temperature dependant stress strain data in sress strain related properties it giving following error ERROR The stress-strain curve definition of material "Isotropic" does not start at (0, 0). The stress-strain curve of non-linear plastic materials must begin at (0, 0). but in my given problem first value is at 70C strain is 0 and flow stress is 700mpa please suggest the solution. Thank you