ANSYS Modal Analysis of Beam
Budget: $30 – $250 USD
I need a seasoned hand in ANSYS Mechanical—Workbench or pure APDL—to run a clean modal analysis on a composite-material beam that sits on springs at both ends. There are two scenarios I must compare: the bare beam on springs, and the same setup once a disc-shaped lumped mass is attached at mid-span. The goal is simple but demands rigor: extract the first several natural frequencies and their corresponding mode shapes for each case, document how the central mass alters the dynamics, and keep numerical error tightly controlled.
You will receive the CAD file defining the exact geometry; no need to recreate the model. The spring boundary conditions at each end must be represented with realistic stiffness values, and I will validate those with you before the final solve. For the lumped mass I do not yet have detailed specs, so I expect your guidance on choosing practical density and dimensions (or an equivalent point mass) and then we will iterate quickly until the assumptions feel right.
Please lean on solid meshing strategy, convergence checks, and, if you use APDL, clear command comments so I can trace the workflow. Workbench users should keep the analysis tree tidy and name every object meaningfully.
Deliverables I need:
• ANSYS project files for both cases (Workbench archive or *.dat/*.cdb for APDL)
• A brief PDF memo summarising setup choices, convergence evidence, tabulated natural frequencies, mode-shape screenshots, and a short comparison of the two scenarios
• Any auxiliary scripts or spreadsheets you use for post-processing
I will review by reopening the model, re-running the solver, and verifying that reported frequencies fall within 2 % of your memo values. If all checks out, that’s acceptance.
Looking forward to working with someone who enjoys squeezing every bit of accuracy out of ANSYS.
You will receive the CAD file defining the exact geometry; no need to recreate the model. The spring boundary conditions at each end must be represented with realistic stiffness values, and I will validate those with you before the final solve. For the lumped mass I do not yet have detailed specs, so I expect your guidance on choosing practical density and dimensions (or an equivalent point mass) and then we will iterate quickly until the assumptions feel right.
Please lean on solid meshing strategy, convergence checks, and, if you use APDL, clear command comments so I can trace the workflow. Workbench users should keep the analysis tree tidy and name every object meaningfully.
Deliverables I need:
• ANSYS project files for both cases (Workbench archive or *.dat/*.cdb for APDL)
• A brief PDF memo summarising setup choices, convergence evidence, tabulated natural frequencies, mode-shape screenshots, and a short comparison of the two scenarios
• Any auxiliary scripts or spreadsheets you use for post-processing
I will review by reopening the model, re-running the solver, and verifying that reported frequencies fall within 2 % of your memo values. If all checks out, that’s acceptance.
Looking forward to working with someone who enjoys squeezing every bit of accuracy out of ANSYS.