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MSE Construction > Chassis > Flashcards

Chassis Flashcards

1
Q

A chassis has to withstand what types of loads ?

A

Static and dynamic

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2
Q

What are the negative effects of a rectangular frame?

A

Sagging- bending action causing frame to bend

Road shocks- shocks caused by vehicle motion or impacts

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3
Q

What is lozenging?

A

Rectangular frames is pushed into a parallelogram shape

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4
Q

What is twisting?

A

One corner of the frame is deflected

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5
Q

What does the flat frame offer?

A

Little resistance to bending and twisting

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6
Q

What does the channel frame offer?

A

Excellent resistance to bending

Resistance increases as depth of section increases

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7
Q

What does tubular frame offer?

A

Excellent resistance to torsion

Resistance increases as diameter is increased

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8
Q

What does a box frame offer?

A

Good resistance to both bending and torsion

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9
Q

What are the Advantages and disadvantages of the light truck frame?

A

Great strength

Very poor resistance to torsion

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10
Q

What does a box frame section need to be?

A

Extremely Rigid at mourning points for body and main components

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11
Q

What do you use in areas of high stress?

A

Gusset plates

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12
Q

What are the 5 types of frames ?

A 
Light truck frame 
Box section frame 
Backbone frame 
Energy absorbing frame 
Frameless frame
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13
Q

What benefits do frameless frames offer (monocoque)

A

Gives a stiff, light construction , suitable for mass construction

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14
Q

What are body shells made by?

A

Spot welding the panels or building a space frame

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15
Q

What is a space frame?

A

Skelton of high structural strength on which is mounted the body panels

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16
Q

What is the purpose of a front sub frame?

A

Supports engine, transmission and suspension components

17
Q

What is the purpose of a rear sub frame?

A

Supports the suspension

18
Q

How is it mounted and what does it reduce?

A

Can be rubber mounted and reduces noise and vibration

19
Q

What is a disadvantage of sub frames? I

A

Difficult to repair

20
Q

When do we carry out chassis checks?

A

Routine maintenance

After a vehicle accident

In accordance with the maintenance schedule

21
Q

What do we check for on the chassis?

A

Fractured, cracked or deformed members
Cracked welds
Advanced corrosion
Severe corrosion

22
Q

What are insecure flitch plates ?

A

Used to reinforce chassis and give resistance to bending

MSE Construction (8 decks)

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