tailieunhanh - Fundamentals of Machine Design P7

Machine parts fail when the stresses induced by external forces exceed their strength. The external loads cause internal stresses in the elements and the component size depends on the stresses developed. Stresses developed in a link subjected to uniaxial loading is shown in . Loading may be due to: a) The energy transmitted by a machine element. b) Dead weight. c) Inertial forces. d) Thermal loading. e) Frictional forces. | Module 3 Design for Strength Version 2 ME IIT Kharagpur Lesson 1 Design for static loading Version 2 ME IIT Kharagpur Instructional Objectives At the end of this lesson the students should be able to understand Types of loading on machine elements and allowable stresses. Concept of yielding and fracture. Different theories of failure. Construction of yield surfaces for failure theories. Optimize a design comparing different failure theories Introduction Machine parts fail when the stresses induced by external forces exceed their strength. The external loads cause internal stresses in the elements and the component size depends on the stresses developed. Stresses developed in a link subjected to uniaxial loading is shown in . Loading may be due to a The energy transmitted by a machine element. b Dead weight. c Inertial forces. d Thermal loading. e Frictional forces. Version 2 ME IIT .