Double the load, predict the effect on RFY, and demonstrate proportionality.
Challenge — Two states, one linear law
Modify the case to solve two load steps:
Load step 1: FY=-500 N, TIME=1.
Load step 2: FY=-1000 N, TIME=2.
You must keep both sets and demonstrate:
RFY₂ / RFY₁ = 2
RMZ₂ / RMZ₁ = 2
Each state must close force and moment with an error less than 0.5 %.
The challenge is completed using a script, without selecting entities from the interface.
Predict before executing
If the reasons are not two, which hypothesis would you review first: linearity, substitution of the
load, active set or support selection? Sort those checks before looking at the `.out`.
Conceptual explorer · not a solver
Explore force and moment equilibrium
Use this to make a prediction. Your MAPDL run and exported evidence remain the source of truth.
Transfer case
Transfer case: eccentrically loaded frame
Move the equilibrium audit to a frame where moment must close as well as force.
Deliberate-practice target
Transfer equilibrium checking to an eccentric frame and close forces and moments in a declared coordinate system.
Execution cycle
1Declare sign convention.
2Predict reaction and moment.
3Extract reaction sums.
4Compare forces and moments separately.
Your reflection stays in this browser.
Graduated hints
1 · Concept hint
Force and moment must close in a declared coordinate system.
2 · Command hint
Extract reactions and use a consistent geometric arm.
3 · Explained solution
Document denominators, signs, and tolerances separately.
