Engineering Talk - DCS's Blog on Quality and Engineering

Webinar: Mechanical and FEA Compliant Modeling Together in 3DCS

SLA Suspension - Kinematic Rigid Body vs. Kinematic Compliance Model

Learn from Srinivasrao Balaga, DCS Senior Dimensional Engineer how to combine mechanical kinematics and compliant FEA moves together into a single assembly.

When: March 12th, 11 am EST 
NEW Special Event - Part of the 2020 Webinar Series
Register FREE: Click Here to Register
 
Learn from Srinivasrao Balaga, DCS Senior Dimensional Engineer how to combine mechanical kinematics and compliant FEA moves together into a single assembly.
 
Suspension Model - Finite Element Analysis
 

This special event will walk through a completed model, showing how it was constructed, including the inputs and outputs. 

The outputs include comparing the rigid kinematic model to the compliant kinematic model, an analysis of the bump steer impact from variation, and wheel alignment changes (camber, caster, toe). 

 

Measurements

Wheel alignment values which are measured on the aligner are considered in this model for measurements.

Mainly Camber, caster, Toe also Ride Height. And using Kinematic motion bump steer slope is plotted, which is the effect of Toe change through out the range of motion.

 

Camber Measurements

Caster Measurements

 

Toe Measurements
 
 
Bump Steering Effects

Bump Steer -

Bump steer is a change in the steering angle of the wheel when the wheel is in bump or droop without turning of the steering wheel. Bump steer is highly undesirable within racing especially on tracks or surfaces that contain bumps. If the suspension is constantly transitioning between bump and droop, then a car with bump steer will constantly be shifting the steering angle of the car and will make the front end very unstable at high speeds.

 

Steering Axis (Angle) Measurement

King Pin or Steering Axis Angle

View from front. Angle between line joining ball joint centers of control arms and reference vertical plane/line.

 
 
 
 
Register for the 2020 Webinar Series to be included in this Special Event and receive the recorded session the day after the live broadcast
 
Register for Kinematic FEA Webinar

 

Topics: CATIA 3DCS Tolerance Analysis FEA Webinar Siemens NX 3DCS Creo PTC Creo SOLIDWORKS GD&T