Lecture Mechanics of materials (Third edition) - Chapter 1 "Introduction - Concept of stress". The main contents of the chapter consist of the following: Concept of stress, review of statics, structure free-body diagram, component free-body diagram, method of joints, stress analysis, design,. | Third Edition CHAPTER MECHANICS OF MATERIALS Ferdinand P. Beer E. Russell Johnston, Jr. John T. DeWolf Introduction – Concept of Stress Lecture Notes: J. Walt Oler Texas Tech University © 2002 The McGraw-Hill Companies, Inc. All rights reserved. Third Edition MECHANICS OF MATERIALS Beer • Johnston • DeWolf Contents Concept of Stress Bearing Stress in Connections Review of Statics Stress Analysis & Design Example Structure Free-Body Diagram Rod & Boom Normal Stresses Component Free-Body Diagram Pin Shearing Stresses Method of Joints Pin Bearing Stresses Stress Analysis Stress in Two Force Members Design Stress on an Oblique Plane Axial Loading: Normal Stress Maximum Stresses Centric & Eccentric Loading Stress Under General Loadings Shearing Stress State of Stress Shearing Stress Examples Factor of Safety © 2002 The McGraw-Hill Companies, Inc. All rights reserved. 1-2 Third Edition MECHANICS OF MATERIALS Beer • Johnston • DeWolf Concept of Stress • The main objective of the study of mechanics of materials is to provide the future engineer with the means of analyzing and designing various machines and load bearing structures. • Both the analysis and design of a given structure involve the determination of stresses and deformations. This chapter is devoted to the concept of stress. © 2002 The McGraw-Hill Companies, Inc. All rights reserved. 1-3 Third Edition MECHANICS OF MATERIALS Beer • Johnston • DeWolf Review of Statics • The structure is designed to support a 30 kN load • The structure consists of a boom and rod joined by pins (zero moment connections) at the junctions and supports • Perform a static analysis to determine the internal force in each structural member and the reaction forces at the supports © 2002 The McGraw-Hill Companies, Inc. All rights reserved. 1-4 Third Edition MECHANICS OF MATERIALS Beer • Johnston • DeWolf Structure Free-Body Diagram • Structure is detached from supports and the loads and .
