What should be the primary concern when setting expressions for a model in Siemens NX?

When setting expressions for a model in Siemens NX, the primary concern should be the accuracy of results. Accuracy is crucial because the expressions and parameters you define will directly impact the model's geometric and analytical integrity. If the expressions do not yield accurate results, the model could lead to flawed designs, which could result in manufacturing errors, increased costs, and potential safety hazards in practical applications.

In the context of design, ensuring that the parameters and expressions are precise means that any analysis based on these models—whether it be stress analysis, thermal simulations, or compatibility with other components—will also be reliable. This foundational accuracy supports the integrity of the entire design process, allowing for effective communication of design intent and engineering principles.

While ease of modification, visual complexity, and calculation speed all play a role in the modeling process, they do not outweigh the absolute necessity of achieving accurate results. Prioritizing accurate expressions ultimately leads to more reliable and efficient designs that meet the required specifications and functional demands within the engineering context.