Stress and Failure Analysis

  • David H. Allen


In Chaps. 3, 4, and 5, models were developed for predicting the stresses, strains, and displacements in bars subjected to a variety of mechanical loadings. It is significant to note that none of these models accounts for failure in any way due to the applied loads. And yet we know from experience that failure can and does occur quite often in nature, and this can be due to excessive deformations, fracture, and buckling, to name a few. This chapter introduces the concept of failure analysis. Using the models developed in the previous chapters, together with a failure model, it is possible to predict failure of a structural component due to externally applied loadings (without actually building the structure!). This may be accomplished by comparing the stress state predicted by the model to an allowable stress state obtained from experimental evidence. It will be shown herein that a carefully designed failure model can be utilized to ensure that structural components can be designed so as to avoid failure.


Maximum Shear Stress Maximum Normal Stress Excessive Deformation Current Text Generalize Plane Stress 
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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • David H. Allen
    • 1
  1. 1.College of Engineering and Computer ScienceUniversity of Texas-Pan AmericanEdinburgUSA

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