1) Stress vs strain curve for brittle and ductile material . 2) In finite element method what are shape functions 3) Design a structure which has force at any section because of its self weight but at any section the stress remains constant. 4) What is the difference between weak form solution and strong form solution.

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Answering questions related to stress-strain curves, finite element method, structure design, and weak vs strong form solutions.

1) Stress vs strain curve: Brittle materials have a steep curve with low strain at failure, while ductile materials have a gradual curve with high strain at failure.
2) Shape functions in finite element method: Mathematical functions used to approximate the unknown behavior of a structure within each finite element.
3) Designing a structure with constant stress: A tapered beam with varying cross-sectional area can distribute self-weight forces to maintain constant stress.
4) Weak form vs strong form solutions: Weak form focuses on minimizing the error in the governing equation, while strong form satisfies the equation exactly.

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