File Extension Library

.OP4 File Extension

  • Developer by: MSC Software
  • Category: Data Files

What are .OP4 files and how to open them?

Can't open .OP4 file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .OP4 file.

What is a .OP4 file extension?

.OP4 file extension is created by MSC Software. .OP4 has been classified as Data Files.

.OP4 is Nastran Output File

Output file created by MSC Nastran, a program that enables you to test the integrity of different structures such as buildings or spacecraft; generated by DMAP alters, which act like commands to extract information (like a matrix); can be written in Binary or ASCII format; contains vectors and matrices of that can be analyzed and output as a structure array by different Nastran readers.

The OP4 file is commonly used to exchange Craig Bampton models between different organizations for analysis. The model consists of large finite element models reduced into a set of small matrices (contained in the OP4 file) that contain mass, stiffness, and mode shape information which can then be connected to physical boundary points to test the low frequency response modes of the structure. The matrices are ideal for manipulation, which makes them easy to test in a wide range of analyses.

List of all softwares that can open the Nastran Output File
MSC Nastran
MSC Nastran

How to fix problems with .OP4 files

  1. You need to update the application that you normally use to open .OP4 files. Only the latest version of the software supports the current .OP4 file format
  2. You need to check the .OP4 file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)