Lecture Strength of Materials I: Chapter 1 - PhD. Tran Minh Tu

Description includes stress-strain concept, tensile test, stress and strain due to axial loading, statically indeterminate case related to axial loading, introduction to plasticity and r[r]

STRENGTH OF MATERIALS

ST

RE

NG

TH

OF

MA

TE

• Ass Prof Tran Minh Tu, PhD Eng.

• Mon., Fri.: 12.15 -14.45 A.M at Room 202 H1

• Office: 1 Floor – Lab Building

• E-mail: tpnt2002@yahoo.com

• Tel: 04.8691 462 (off.). Handphone: 0912101173

• Course notes:

• http://www.tranminhtu.com

• Ref : Ferdinand P Beer, Jr J T DeWolf, D F.

Mazurek. Mechanics of Materials Mc Graw Hill 2009

• Office hours: Tuesday 8:00-11:00 A.M. or by

appointment

Sample reading list:

Russell C Hibbeler, Mechanics of Materials, 6/E (required text)

Roy R Craig, Jr (1996), Mechanics and Materials Bedford, Fowler & Liecht (2003), Statics and Mechanics and Materials

Strength of Materials

Princeton ： Grading:

Mid Term Exam - 20% Design Project - 30% Take Home Final Exam

-25%

Problem set(s) - 15% Other (See Instructor) - 10%

MIT： Grading

Homework 25%

Lab Assignments 30% Quiz 15%

Case Study and Presentation 10% Final Exam 20%

Class Attendance*

Stanford： Grading

Homework Assignments 25%

Lab Reports 10% Midterm 25%

Final Exam 40%

Berkeley: Grading

Weekly homework

assignments(25%) Two Midterm Examinations(20%+20%)

1

CHAPTER

1.1 Introduction

1.2 Review of Static

1.3 Equilibrium of deformable body 1.4 Concept of Stress

1.5 Stress Under General Loadings 1.6 Strain

1.7 Types of loading 1.8 Assumptions

1.9 Principle Superposition

1.1 Introduction

- Consider a diving board as an example of a deformable body

1.1.1 Strength of materials • A branch of mechanics

• It studies the relationship of

– External loads applied to a deformable body, and

– The intensity of internal forces acting within the body

• Are used to compute the deformations of a body

• Strength of Materials is a field of study that

determines strength, stiffness, & stability

1.1 Introduction Mechanics Rigid Body Mechanics Deformable Body Mechanics

Strength of Materials

Static

(Dynamic) Kinetic Kinematic

(2) Kinetic:

∑F = ma (1) Equilibrium

∑Fx = 0; ∑Fy = 0; ∑Fz = 0; ∑Mx= 0; ∑My= 0; ∑Mz=

Rigid Body

• Static

Deformable Body

• Strength of Materials

(1) Equilibrium

∑Fx = 0; ∑Fy = 0; ∑Fz = 0; ∑Mx= 0; ∑My= 0; ∑Mz= (2) Stress – Strain relationship:

1.1.2 Classification of Structural element

1.1 Introduction

Classification of Structural elements

Structural elements compose a structure and can be classified as by their forms (shapes and dimensions)

• Plates and Shells

1.1 Introduction

1.1 Introduction

1.1.3 External loads

• Surface forces

– Area of contact

– Concentrated force

– Linear distributed force – Centroid C (or geometric

center)