All Questions
Tagged with automotive-engineering dynamics
13
questions
1
vote
2
answers
221
views
How does 2nd gear create more thrust than 1st gear?
Let’s analyze a vehicle parallel to velocity and forces applying on it.
The 1st gear has a maximum velocity value after which you can’t accelerate more. It means that thrust force on wheels generated ...
- 125
0
votes
0
answers
126
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How to calculate max load on a custom hitch?
Non engineer here. I'm interested in a conservative calculation of max trailer load for existing frame members for a truck I have. The truck is rated at ~8800lbs towing when stock and with a ...
- 101
0
votes
0
answers
309
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What is the effect of caster angle in automobiles? What will happen if we use neutral caster?
What is the effect of caster angle in automobiles and what will happen if we use neutral caster?
We study that positive caster makes vehicle more stable at high speeds. It increases lean while ...
- 57
3
votes
1
answer
120
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How is rack and pinion steering configured for different wheel/axle spacing?
The rack and pinion is supposed to turn each of the front wheels differently, such that lines orthogonal to the wheels will intersect in line with the rear axle:
Which components of the rack and ...
- 187
1
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1
answer
169
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Trajectory of the center of mass of a vehicle
The problem is to find the trajectory of the center of mass of a car when it is rotating and translating (after an off center collision, for instance)
What i know as input is the trajectory of the ...
- 111
1
vote
1
answer
84
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Why is longitidunal force of tyre calculated negative in SIMULINK?
With the help of the Vehicle Dynamics Blockset of SIMULINK, it is easy to obtain the tyres' longitudinal force (tractive force) using some of the inputs. You can see one of the examples below.
In ...
- 45
1
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1
answer
160
views
Inertial Forces while analysing forces on a Piston in a Slider - Crank Mechanism?
I get that we are analysing the Piston in a non-inertial frame of reference, but the point of my question is that according to D'Alembert's Principle, whenever an inertial force comes in the line of ...
- 21
7
votes
3
answers
513
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Questions regarding Cornering Stiffness for RC Car
I am a bachelor's level student tasked with modeling the vehicle dynamics of an RC Car that will be made to drive autonomously. I lack prior experience or particularly specific education with vehicle ...
user14808
1
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1
answer
125
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What is slippage velocity?
I’m trying to understand the effects of a bike’s trail on its steering stability. There, however, is a concept of slippage velocity of the tires during steering of which I cannot make heads or tails ...
- 352
2
votes
2
answers
2k
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Effective radius of a tire and rolling resistance based on information on velocity and tire pressure
I need to make an nonlinear observer of a system and need to know how the charactaristics of a tire are to get the final conclusion.
I really need some good articles about how the effective radius of ...
- 203
2
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2
answers
2k
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Why does a vehicle under crosswind need corrective steering?
If we consider a stationary car, a moderate wind hitting it broadside might tilt it a bit, but not move it otherwise. Now, consider the car moving perpendicular to that wind (e.g., driving straight ...
- 123
1
vote
1
answer
343
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How does friction help a car to turn?
I know that friction helps car to move forward. The engine of the car turns the wheels, and the tyres have to grip the road in order for the car to start moving forward. If there is no friction, tyres ...
- 471
3
votes
1
answer
765
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Ackerman Conundrum
Source: https://en.wikipedia.org/wiki/Ackermann_steering_geometry
The image above shows a vehicle with Ackermann steering. The front wheels are connected by a mechanism so that they turn at different ...
- 352