Blast Response Analysis for NRC Slab in LS dyna
Budget: ₹600 – ₹1,500 INR
I need a full finite-element simulation that captures how a National Research Council concrete slab behaves under a specified blast load. The task is strictly analysis and simulation; no design changes or on-site inspection are expected at this stage.
Scope
• Build or refine a 3-D solid model of the slab in a commercial code you are comfortable with—ANSYS, LS-DYNA, Abaqus, or an equivalent nonlinear dynamic solver.
• Apply the blast parameters I will provide (charge weight, standoff, pulse shape). If additional assumptions are needed, follow UFC 3-340-02 or similar guidance and note them clearly.
• Include realistic material models for concrete (damage or plasticity) and reinforcing steel so that fracture, spalling, and large deformations can be tracked.
• Run transient analyses long enough to capture peak response and any residual displacement.
• Extract time-histories and contours for displacement, stress, strain, and reaction forces.
Deliverables
1. Solver input files and any user subroutines.
2. A concise report (PDF) summarising modelling choices, mesh checks, convergence evidence, peak response values, and high-resolution plots that illustrate damage areas.
3. A short slide deck (optional but helpful) that highlights key findings for management review.
Acceptance Criteria
• Model stability is demonstrated through balanced energy plots and mesh-sensitivity checks.
• Reported peak responses match hand-calc estimates within reasonable engineering tolerance.
• All files open and run without licence errors on my end.
Timeline is flexible within two weeks, yet sooner is always welcome. Let me know which software you propose to use and any previous blast analysis experience you can reference; this helps me verify compatibility with our in-house review tools.
Scope
• Build or refine a 3-D solid model of the slab in a commercial code you are comfortable with—ANSYS, LS-DYNA, Abaqus, or an equivalent nonlinear dynamic solver.
• Apply the blast parameters I will provide (charge weight, standoff, pulse shape). If additional assumptions are needed, follow UFC 3-340-02 or similar guidance and note them clearly.
• Include realistic material models for concrete (damage or plasticity) and reinforcing steel so that fracture, spalling, and large deformations can be tracked.
• Run transient analyses long enough to capture peak response and any residual displacement.
• Extract time-histories and contours for displacement, stress, strain, and reaction forces.
Deliverables
1. Solver input files and any user subroutines.
2. A concise report (PDF) summarising modelling choices, mesh checks, convergence evidence, peak response values, and high-resolution plots that illustrate damage areas.
3. A short slide deck (optional but helpful) that highlights key findings for management review.
Acceptance Criteria
• Model stability is demonstrated through balanced energy plots and mesh-sensitivity checks.
• Reported peak responses match hand-calc estimates within reasonable engineering tolerance.
• All files open and run without licence errors on my end.
Timeline is flexible within two weeks, yet sooner is always welcome. Let me know which software you propose to use and any previous blast analysis experience you can reference; this helps me verify compatibility with our in-house review tools.