Automating Code Checking in Structural Analysis: Technical Breakdown and Implementation Methodology

There’s something off about how engineering works right now. Structural analysis and design software has come a long way. FEA solvers handle nonlinear dynamics, multiphysics, really demanding simulations. They’ve come a long way. But code checking in a lot of companies still runs on spreadsheets. That gap makes misreading results easier than it should be.

This piece looks at how automated code checking operates and what that shift means for calculation reliability.

The Problem with Traditional Post-Processing

You run your FEA model and convergence comes through. Good. Now you start pulling stresses, forces, and displacements out by hand. On serious structures like offshore platforms or high-rise buildings, the results pile up into gigabytes. But size isn’t the issue. What hurts is converting physical quantities (MPa, N, mm) into dimensionless utilization factors that standards demand. Running that by hand across thousands of elements is where mistakes creep in.

Exporting to Excel looks straightforward. It really isn’t.

Spot checking is the first trap. Engineers can’t check every finite element under every load combination. There’s simply no way. So you focus on areas where stress concentrations probably sit. But every now and then, and anyone who’s been through this knows what I mean, you miss local buckling somewhere that looked clean. Torsion combined with compression made that spot critical, and nothing told you to look there.

Then there’s the broken link with the model. Data in Excel is static, dead the moment you export it. Change geometry or boundary conditions, and your spreadsheet is instantly outdated. During iterative design people sometimes rebuild it and sometimes don’t. Decisions get made on stale numbers.

Auditability is the third issue. Hand a reviewer your custom script with nested macros four layers deep. Certification bodies like DNV, ABS, and RMRS want intermediate calculations now, proof that standard formulas were applied correctly. Your tangled macro setup doesn’t give them that.

The Mechanics of Automated Verification

Automated structural analysis and design software like SDC Verifier skip the export step entirely. They sit on the FEA solver database, pulling from the complete result set with nothing in between. The process splits into three stages: topology recognition, load processing, and code logic application.

Feature Recognition

FEA solvers are blind to what a structure actually is. A model is nodes connected to elements through a stiffness matrix. The solver has no idea that BEAM elements form a column or that SHELL elements make up a pressure vessel wall.

Recognition algorithms handle that. They cluster finite elements into engineering entities.

Take members. Collinear elements get merged into a single member for correct buckling length calculation. Standards like Eurocode 3 or AISC 360 tie load-bearing capacity to the slenderness of the entire member, not local stress in one element. If the grouping is wrong, the utilization ratio is meaningless.

Then panels and stiffeners. Shell fields between stiffeners get identified automatically for plate buckling checks under DNV or ABS standards. Panel dimensions (a x b), plate thickness, acting stresses, all extracted without anyone entering geometry by hand.

And welds. Element connection nodes get flagged for fatigue strength assessment. Simple in concept, easy to miss when doing it manually across hundreds of joints.

Managing Load Combinatorics

Superposition is where automation pays for itself. Industrial problems throw hundreds of load cases at you. SDC Verifier forms linear combinations after the solve, no rerunning needed. Then envelope methods scan every possible combination, thousands of them, pulling the worst case for each element. So even if peak stress on some bracket happens under an unlikely mix, say north wind plus empty tank plus seismic simultaneously, it gets flagged.

Without that you’re guessing which combinations govern.

Code Checks and Formula Calculations

At the core sits a library of digitized standards. Not a black box though. The formulas are visible, which matters more than you’d think. Check a beam against API 2A-WSD and you can follow exactly how axial force (f_a) and bending moments (f_b) get extracted from FEA results and substituted into interaction equations. Traceable from input to output.

Customization runs alongside that, and honestly it’s just as important. Engineers often need to modify standard formulas or build checks for internal company rules no published standard covers. The built-in formula editor with access to model variables makes that possible. For some firms this is the reason they adopt the system in the first place.

Engineering Interpretation and Applicability Limits

Here’s where the engineer’s role changes shape. The software runs millions of checks in minutes, so calculation speed is no longer the bottleneck. What remains is making sure inputs are right and outputs make physical sense. Get the boundary conditions wrong and the system won’t notice. It’ll produce clean, well-formatted, completely wrong results.

Stress singularity zones trip people up regularly. FEA produces points with theoretically infinite stress — concentrated loads, sharp re-entrant corners, that kind of geometry generates them reliably. Without proper configuration, this creates noise that buries real issues. An experienced engineer handles this by:

• applying averaging filters to smooth out mathematical artifacts
• marking singularity zones for exclusion (hot spot exclusion)
• distinguishing between a mathematical artifact and an actual strength problem

Choice of calculation method stays human too. Switching between Elastic and Plastic checks is easy. But whether plastic deformations are acceptable in a specific structure is not a question software answers. That comes from the technical specification and from understanding how the structure behaves in service.

Documentation as Part of the Calculation Process

Reports in engineering consulting are legal documents. Not summaries, not appendices. Legal documents. Anyone who’s assembled one by hand knows the pain. Screenshots that go stale the moment geometry changes. Tables rebuilt from scratch after every iteration.

Automated software generate calculation protocols tied directly to the model. The model changes, the report updates. No confusion about which version of the geometry a screenshot came from.

For each critical element the report lays out context (element location in the 3D model), input data (forces and moments for the governing load combination), the process itself (standard formulas step by step with real numbers substituted in), and the verdict (safety factor and the code provision it references).

When the model changes, say a larger beam section or adjusted loading, the report regenerates automatically. Documentation prep time drops by 50 to 70 percent, and that freed-up time goes back to actual engineering work.

Software Selection Criteria

When selecting software, two criteria matter most:

1. Integration depth. External post-processors that require file conversion tend to lose attribute information along the way — component names, material properties, things you actually need. What works better is a solution embedded inside the pre/post-processor environment. SDC Verifier is an independent software that also offers native integration with Ansys Mechanical, Femap, and Simcenter 3D, giving direct access to the results database (RST, OP2) — no translation layer, no conversion artifacts.
2. Code coverage. If the software ships with current industry standards built in (ISO, EN, AISC, DNV, API, ASME) you start right away instead of building rule sets from scratch. Look at specialized checks too: fatigue, bolted connections, welded joints, hot spot extrapolation. These involve complex preliminary stress processing and they’re exactly where manual approaches fall apart fastest.

Conclusion

This shift isn’t coming. It’s already here. Code checking automation is happening now across construction and mechanical engineering. The move from manual “Excel engineering” to integrated verification means every structural element actually gets checked, and the usual data-transfer errors mostly drop out.

For engineering firms that translates to faster turnaround, yes. But also more design variants tested, better optimization, and something clients increasingly care about, which is auditable proof that the structure meets requirements. Safety regulations keep tightening. Deadlines keep compressing. Knowing how to use these tools stopped being a bonus a while ago. It’s just part of what structural engineering looks like now.