List three design responses to an adverse elastic-stress-analysis finding (i.e.,

Question

List three design responses to an adverse elastic-stress-analysis finding (i.e., when design analysis shows that the maximum stress at some point exceeds the elastic limit of the
material).
I am looking for causes of stress in the design of a system and think of what you could do to reduce the margin to yield in the design. For example, a specific metal of a given thickness could be altered to either a thicker or thinner cross section to change the characteristics. Additionally, a welded joint would have certain characteristics that a forged or extruded piece would not have. Also, an aluminum alloy would have designs limits that an inconel alloy would not.

Explanation / Answer

Say an object yields to tensile forces it will "neck" at the weakest area of the part. Three design change possibilities would be to: lets assume a cylindrical body 1. Increase the cross sectional area of the object so the tensile forces will be dissipated or more evenly distributed among the area. 2. Use a material that has a higher elastic range essentially one that is more resistant to tensile force yielding (one that can take a higher load and still return to its original shape thus maintaining its structural integrity) 3. Use a geometrically different cross section object. Say a solid beam fails a deflection test, simply reconfigure the solid beam to an I-beam cross section,and design the web and flanges to a more effective size so that the structure can maintain the load.

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