Recent content by AbsoluteUnit
-
A
Undergrad Rigid body mechanics and coordinate frames
Thanks! I skimmed through and it looks like really good reading material, I'll have to set aside some time to look into it since I need to improve my understanding of the subject. In the meantime, between my last post and now I went ahead and did some simulation experiments with both scenarios...- AbsoluteUnit
- Post #4
- Forum: Mechanics
-
A
Undergrad Rigid body mechanics and coordinate frames
I figured it out, I forgot about the inertial force (a.k.a fictitious force): ψ' vBy, ψ' vBx, that you need to include when working in a non-inertial frame, so actually: FBx = mB(aBx - ψ' vBy) FBy = mB(aBy + ψ' vBx) So it is possible to write the equation of motion in the B-frame as: aBx =...- AbsoluteUnit
- Post #2
- Forum: Mechanics
-
A
Undergrad Rigid body mechanics and coordinate frames
Hello all, I have some issues understanding the inertial-frame (or global-frame, G-frame) versus the body-frame (B-frame) when it comes to simulating the motion of a rigid body in 2 dimensions (planar body mechanics) in a system of ODEs. I have been self-learning from textbooks on simulating...- AbsoluteUnit
- Thread
- Body Coordinate Frames Mechanics Rigid body
- Replies: 3
- Forum: Mechanics
-
A
Vehicle cornering behavior and Ackermann geometry
Thanks! Adding complexity to the model is something I plan to do after I submit my thesis (and if my advisor is still keen on letting me work on the problem), for now I have to contend with naive application of Ackermann steer. But this is really good information, since I have been looking for...- AbsoluteUnit
- Post #4
- Forum: Mechanical Engineering
-
A
Vehicle cornering behavior and Ackermann geometry
Dear all, I am writing a vehicle dynamics simulation for my thesis topic. However, I came into a conundrum when testing the cornering behavior of my vehicle. The problem is inherently complex due to its many subsystems, but I'll try to give as much detail without bogging the thread down...- AbsoluteUnit
- Thread
- Behavior Geometry Vehicle
- Replies: 3
- Forum: Mechanical Engineering
-
A
Data sources for Vehicle Dynamics Model validation?
jedishrfu, Thank you for the suggestions. I read through the description of the data sets, but I'm not sure if it contains what I need, or if I currently have the luxury of time or expertise to tinker around a lot (maybe in the future, this is actually pretty cool stuff ngl!). I have...- AbsoluteUnit
- Post #4
- Forum: Mechanical Engineering
-
A
Data sources for Vehicle Dynamics Model validation?
Hello all, I have written a VDM for my Masters thesis, unfortunately, since I am from a discipline other than mechanical engineering I don't have access to reliable validation material or a way to produce it (moreover, we don't have an actual vehicle testing lab/area at the U that I know of)...- AbsoluteUnit
- Thread
- Data Dynamics Model Sources Vehicle Vehicle dynamics
- Replies: 4
- Forum: Mechanical Engineering
-
A
Help Identifying Source of Sliding Adhesion Coefficient Equation
Hello Mike, I got side tracked by a lot and was advised to focus on other aspects of my research, but I would still like to say thank you for the recommended resources, cheers.- AbsoluteUnit
- Post #4
- Forum: Mechanical Engineering
-
A
Help Identifying Source of Sliding Adhesion Coefficient Equation
Hello all, I am a graduate student working on a thesis in tire dynamics and simulation. I have came across the following equation for sliding adhesion coefficient for the HSRI tire model (source: Schramm et. al. Vehicle Dynamics, Modeling and Simulation, pg. 182): Unfortunately, Schramm et...- AbsoluteUnit
- Thread
- Adhesion Coefficient Sliding Source
- Replies: 3
- Forum: Mechanical Engineering