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(Non-InterPenetration Activity) is a specialized analysis feature within CATIA’s Composites Design (CPD) and Generative Shape Design (GSD) workbenches. Its primary function is to detect, quantify, and prevent interpenetration between adjacent plies, core materials, or tool surfaces in a composite layup.
Use TypeName(oActivity) to print the exact object class name to the immediate window and verify its supported methods in the CATIA Automation Help documentation. Simulation does not update visually after script execution.
To make your simulation run faster and more accurately: nipactivity catia
Would you like scripts, job schema, or a dispatcher prototype next?
This guide covers:
: You begin by drawing a 2D profile (usually half of the pin's cross-section) on a plane like the YZ or XY plane. Simulation does not update visually after script execution
In massive aerospace or automotive assemblies, loading every single part with full geometry can freeze system performance. CATIA uses "Activity" states to let engineers tell the software which parts to compute and which to ignore temporarily. The NipActivity tool helps control and audit these transitions. Key Architectural Roles
Topology optimization for lightweight, high-performance parts.
: The collection of simulated environments. Simulation / Sequence : The wrapper holding the timeline. In massive aerospace or automotive assemblies, loading every
It sits inside the Process document ( .CATProcess ), organizing sequences of operations.
Automating simulations saves hours of manual timeline tweaking. Below is a conceptual breakdown and a structural example of how to access and modify simulation activities using CATIA VBA. Step-by-Step Implementation
Set CATIA = CreateObject("CATIA.Application") CATIA.DisplayFileAlerts = False On Error Resume Next Set doc = CATIA.Documents.Open("C:\jobs\input.CATPart") ' perform operations... doc.SaveAs "C:\jobs\output.CATPart" doc.Close CATIA.Quit