RD-E: 0500 Beam Frame
A beam frame receives an impact from a mass having initial velocity.
The explicit approach leads to finding a quasi-static equilibrium of the structure after impact.
Options and Keywords Used
- Beam
- Plasticity and Johnson-Cook material (/MAT/LAW2 (PLAS_JOHNS))
- Boundary conditions (/BCS)
- Initial velocities (/INIVEL)
- Beam element (/PROP/TYPE3 (BEAM))
- Rigid wall (/RWALL)
The impacting mass is simulated using a sliding rigid plane wall (/RWALL) having an initial velocity of 10 ms-1and a mass of 3000 g. Only one secondary node exists: the node O to simulate a point impact.
Input Files
Refer to Access the Model Files to download the required model file(s).
The model files used in this example include:
FRAME_*.rad
Model Description
The purpose of this example is to perform a static analysis using beam elements.
Dimensions are: AB = BC = CD = BE = BF = E'C = CF' = 90 mm.
- Beam Properties
- Cross section
- 36 mm2
- Moments of inertia in Y and Z
- 108 mm4
- Moments of inertia in X
- 216 mm4
- Material Properties
- Density
- 0.0078
- Young's modulus
- 200 000
- Poisson's ratio
- 0.3
- Yield stress
- 320
- Hardening parameter
- 134.65
- Hardening exponent
- 1.0
All other coefficients are set to default values. Plasticity is taken into account using LAW2 without failure.