Learning

Department of Civil Engineering

International University (IU)

MECHANICS OF MATERIALS LABORATORY

Department of Civil Engineering
Room 506, International University – Viet Nam National University HCMC Quarter 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Viet Nam. Phone: [phone]. Ext 3425 Fax: [phone] www.hcmiu.edu.vn

Mechanics of Materials Laboratory
Course Outline No. ST01 ST02 ST03 ST04 ST05 ST06 Assessment • • Attendance: 10% Group Report: 90% (Each Lab Session: 15%). The report will be submitted 1 week after the lab session. Topic Bending Stress in a Beam Steel Bars under Pure Tensile Forces Torsion of Circular Sections Buckling of Struts Continuous and Indeterminate Beams Redundant Truss

Please provide the following parts in your report: • Introduction (purpose of the experiment) • Theory • Experimental Results • Analyzing the Experimental Results • Conclusions

Group Allocation Group A Group B Group C Group D

Schedule Group A & B No Lab ST01 ST02 ST03 ST04 ST05 ST06 No Lab Group C & D No Lab ST02 ST01 ST04 ST03 ST06 ST05 No Lab

W1 W2 W3 W4 W5 W6 W7 W8

Department of Civil Engineering

International University (IU)

ST01: BENDING STRESS IN A BEAM

Department of Civil Engineering
Room 506, International University – Viet Nam National University HCMC Quarter 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Viet Nam. Phone: [phone]. Ext 3425 Fax: [phone] www.hcmiu.edu.vn

1.

Introduction

The Bending Stress in a Beam experiment introduced students to stress and strain, bending moment, section properties and the bending equation. 2. Theory

Considering the simply supported beam as shown in Figure 1, there are two point loads ( W / 2 ) applying to this beam.

Figure 1 Beam set-up and schematic The applied bending moment (M) is calculated as:

M = where: M=Bending moment (Nm) L=Span length as shown in Figure 1 (m) From the bending equation, we have:

WL 2

(1)

M σ = I y