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Find the maximum and minimum Stress developed at the base of a column loaded as shownin fig. Also draw stress distribution. Take E=2×105N/mm2

Subject : Structural Analysis 1

Topic : Struts

Difficulty : High

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1 Answer
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Given data:

L=6mD=300mmd=250mmP=150 kNe=450mmt=25mmE=2×105 N/mm2

To find: Maximum & minimum stresses


A=π4(30022502)=π4(27500)A=21598.4 mm2_E=2×105 N/mm2_IYYπ64(30042504)=π64(3004254)IYY=205.86×106mm4σd=PA=150×10321598.4σd=6.95 N/mm2_σb=MI×y=P×e×ˉxIYY=150×103×450×150205.86×106σb=49.18 N/mm2_σmax=σd+σb=6.95+49.18σmax=56.13 N/mm2_σmin=σdσb=6.9549.18σmin=42.23 N/mm2_

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