TUTORIAL 1

01102

Description

FAKULTI KEJURUTERAAN MEKANIKAL UNIVERSITI TEKNIKAL MALAYSIA MELAKA REKABENTUK KOMPONEN AUTOMOTIF BMCA 3633 TUTORIAL 1 Stress and Deformation Analysis 1. A tensile load of 5kN is applied to a square bar, 12mm on a side and having a length of 1.65m. Compute the stress and the axial deformation in the bar if it is made from a) AISI 1020 hot rolled steel(E=207GPa) e) Titanium Ti-6A1-4V(E=114GPa) b) AISI 8650 OQT 1000 steel(E=207GPa) f) Rigid PVC plastic(E=2.41GPa) c) Ductile iron A536-88 (60-40-18)(E=152GPa) g) Phenolic plastic(E=7.58GPa) d) Aluminum 6061-T6(E=69GPa) 2. Compute the stress in the middle portion of rod AC in Figure 1 if the vertical force on the boom is 11120N. The rod is rectangular, 38.1mm by 88.9mm. Figure 1 3. Refer Figure 1, each of the pins at A, B, and C has a diameter 0f 12.7mm and is loaded in double shear. Compute the shear stress in each pin. 4. Compute the torsional shear stress in a circular shaft with a diameter of 50mm that is subjected to a torque of 800Nm. If the shaft is 850mm long and is made of steel, compute the angle of twist of one end in relation to the other.(G=80GPa) 5. A 76.2mm diameter steel bar has a flat milled on one side, as shown in Figure 2. If the shaft is 1117.6mm long and carries a torque of 1197.8Nm, compute the stress and the angle of twist.(G=81.8GPa) Figure 2 mfa’07/T1/T8 1/3FAKULTI KEJURUTERAAN MEKANIKAL UNIVERSITI TEKNIKAL MALAYSIA MELAKA REKABENTUK KOMPONEN AUTOMOTIF ...

Informations

• Publié par: Megar
• Nombre de lectures: 24
• Langue: English

Extrait

FAKULTI KEJURUTERAAN MEKANIKAL

UNIVERSITI TEKNIKAL MALAYSIA MELAKA

REKABENTUK KOMPONEN AUTOMOTIF

BMCA 3633

TUTORIAL 1

Stress and Deformation Analysis

mfa’07/T1/T8

1/3

1.

A tensile load of 5kN is applied to a square bar, 12mm on a side and having a length of

1.65m. Compute the stress and the axial deformation in the bar if it is made from

a)

AISI 1020 hot rolled steel(E=207GPa)

e) Titanium Ti-6A1-4V(E=114GPa)

b)

AISI 8650 OQT 1000 steel(E=207GPa)

f)

Rigid PVC plastic(E=2.41GPa)

c)

Ductile iron A536-88 (60-40-18)(E=152GPa) g) Phenolic plastic(E=7.58GPa)

d)

Aluminum 6061-T6(E=69GPa)

2.

Compute the stress in the middle portion of rod

AC

in Figure 1 if the vertical force on the

boom is 11120N. The rod is rectangular, 38.1mm by 88.9mm.

Figure 1

3.

Refer Figure 1, each of the pins at

A

,

B

, and

C

has a diameter 0f 12.7mm and is loaded in

double shear. Compute the shear stress in each pin.

4.

Compute the torsional shear stress in a circular shaft with a diameter of 50mm that is

subjected to a torque of 800Nm.

If the shaft is 850mm long and is made of steel, compute the angle of twist of one end in

relation to the other.(G=80GPa)

5.

A 76.2mm diameter steel bar has a flat milled on one side, as shown in Figure 2. If the

shaft is 1117.6mm long and carries a torque of 1197.8Nm, compute the stress and the

angle of twist.(G=81.8GPa)

Figure 2

FAKULTI KEJURUTERAAN MEKANIKAL

UNIVERSITI TEKNIKAL MALAYSIA MELAKA

REKABENTUK KOMPONEN AUTOMOTIF

BMCA 3633

TUTORIAL 1

Stress and Deformation Analysis

mfa’07/T1/T8

2/3

6.

Refer Figure 3, draw

a)

the free-body diagram of only the horizontal beam portion of the given figure.

b)

the complete shear and bending moment diagrams.

Where used, the symbol

X

indicates a simple support capable of exerting a reaction force

in any direction but having no moment resistance.

Figure 3

7.

Compute the maximum tensile stress in the bracket shown in Figure 4.

Figure 4

8.

For the plate in tension in Figure 5, compute the stress at each hole, assuming that the holes

are sufficiently far apart that their effects do not interact.

Figure 5

9.

Compute the maximum stress in the member as shown in Figure 6, considering stress

concentrations.

FAKULTI KEJURUTERAAN MEKANIKAL

UNIVERSITI TEKNIKAL MALAYSIA MELAKA

REKABENTUK KOMPONEN AUTOMOTIF

BMCA 3633

TUTORIAL 1

Stress and Deformation Analysis

mfa’07/T1/T8

3/3

Figure 6

10.

Figure 7 shows a horizontal beam supported by a vertical tension link. The cross sections of

both the beam and the link are 20mm square. All connections use 8mm diameter

cylindrical pins in double shear.

a)

Draw the free-body diagram of only the horizontal beam portion of the given

figure.

b)

Draw the complete shear and bending moment diagrams.

c)

Compute the tensile stress in member

A

-

B

d)

Compute the stress due to bending in

C

-

D

e)

Compute the shearing stress in the pins

A

and

C

.

Figure 7

FAKULTI KEJURUTERAAN MEKANIKAL

UNIVERSITI TEKNIKAL MALAYSIA MELAKA

REKABENTUK KOMPONEN AUTOMOTIF

BMCA 3633

ANSWER TUTORIAL 1

Stress and Deformation Analysis

mfa’07/AT1/AT8

1/8

1.

2.

3.

FAKULTI KEJURUTERAAN MEKANIKAL

UNIVERSITI TEKNIKAL MALAYSIA MELAKA

REKABENTUK KOMPONEN AUTOMOTIF

BMCA 3633

ANSWER TUTORIAL 1

Stress and Deformation Analysis

mfa’07/AT1/AT8

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3.

4.

FAKULTI KEJURUTERAAN MEKANIKAL

UNIVERSITI TEKNIKAL MALAYSIA MELAKA

REKABENTUK KOMPONEN AUTOMOTIF

BMCA 3633

ANSWER TUTORIAL 1

Stress and Deformation Analysis

mfa’07/AT1/AT8

3/8

5.

FAKULTI KEJURUTERAAN MEKANIKAL

UNIVERSITI TEKNIKAL MALAYSIA MELAKA

REKABENTUK KOMPONEN AUTOMOTIF

BMCA 3633

ANSWER TUTORIAL 1

Stress and Deformation Analysis

mfa’07/AT1/AT8

4/8

FAKULTI KEJURUTERAAN MEKANIKAL

UNIVERSITI TEKNIKAL MALAYSIA MELAKA

REKABENTUK KOMPONEN AUTOMOTIF

BMCA 3633

ANSWER TUTORIAL 1

Stress and Deformation Analysis

mfa’07/AT1/AT8

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7.

8.

FAKULTI KEJURUTERAAN MEKANIKAL

UNIVERSITI TEKNIKAL MALAYSIA MELAKA

REKABENTUK KOMPONEN AUTOMOTIF

BMCA 3633

ANSWER TUTORIAL 1

Stress and Deformation Analysis

mfa’07/AT1/AT8

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9.

10.

FAKULTI KEJURUTERAAN MEKANIKAL

UNIVERSITI TEKNIKAL MALAYSIA MELAKA

REKABENTUK KOMPONEN AUTOMOTIF

BMCA 3633

ANSWER TUTORIAL 1

Stress and Deformation Analysis

mfa’07/AT1/AT8

7/8

FAKULTI KEJURUTERAAN MEKANIKAL

UNIVERSITI TEKNIKAL MALAYSIA MELAKA

REKABENTUK KOMPONEN AUTOMOTIF

BMCA 3633

ANSWER TUTORIAL 1

Stress and Deformation Analysis

mfa’07/AT1/AT8

8/8

14.06GPa