BigLHArrow S E R V I C E S BigRHArrow

 

ENGINEERING DESIGN SERVICES

  Engineering Design Services Overview SmallArrowRH

 

     ENGINEERING MATERIALS & MANUFACTURING:  

 SmallArrowRH Castings

 SmallArrowRH Extrusions

 SmallArrowRH CNC Parts

 SmallArrowRH Plastics & Injection Moulding

 SmallArrowRH Elastomers

 SmallArrowRH Sheet Metal & Fabrication

 

     ENGINEERING COMPONENTS:

 SmallArrowRH Gears & Springs

 SmallArrowRH Hydraulics & Pneumatics

 SmallArrowRH Jigs & Fixtures

 

     ENGINEERING ANALYSIS:

 SmallArrowRH Tolerance Analysis

 SmallArrowRH Mechanims

 SmallArrowRH Kinematics

 

     ENGINEERING SYSTEMATIC DESIGN:

 SmallArrowRH ElectroMechanical

 SmallArrowRH Machine Design

 SmallArrowRH Precision Engineering

 

 

BigRHArrowBigRHArrowComputer Aided Engineering (CAE)  BigRHArrowFEA Case Study: Results Tensile Stress

FEACaseStudyResultsMaxPrincipal

SmallLHArrow Maximum principal stresses - tensile stress SmallRHArrow

Tensile Stress: Part of the model has disappeared (inside inner rim circumference), due to the colour bar being set to show positive (0-100MPa) numbers and those stresses are negative or compressive. Therefore, the inner rim, outside lower spokes and the inside upper spokes are in tensile stress. Tensile stresses are of most concern since they do the damage for fatigue and damage tolerance, and are usually higher than the Von Mises stress prediction. The difference between Von Mises and maximum principal stress has to be carefully evaluated.

Displacement Result: Displacement does not change. The 100mm displacement of the wheel alone, against 210mm of the tyre plus the wheel means that the tyre is deflecting 110mm under load. A closer inspection of the displacement in the tensile stressed spokes and rim will aid undertanding of the stresses since in a linear statics analysis, the displacement (strain) is directionally proportional (via Young's Modulus and Poisson's Ratio) to stress.