Southwest Research Aircraft Structural Analysis Institute®

Southwest Research Institute® (SwRI®) structural engineering spe- cialists have a combined total of more than 150 years of experience in anal- ysis of structures under various load conditions. SwRI employs the latest technology in computational simula- tion to provide clients with real-time data formatted for accurate analysis and verification of finite element analysis. SwRI’s analytical capabilities KEYWORDS D015725 are supplemented by testing of struc- Finite element model (FEM) of aircraft forward fuselage tures to substantiate the models. Structural Analysis Capabilities Finite Element SwRI has the capability to perform Modeling (FEM) all levels of structural analysis, from individual components to complete Finite Element assemblies. Development of finite ele- Analysis (FEA) ment models from geometric data or modification of existing models for component improvement or repair Classical Analysis is included in these capabilities. The staff has performed stress analysis ser- vices for commercial and government Bonded Composite clients in many areas of aircraft struc- Structure tures, including wing, empennage, D015726 fuselage, landing gear, and whole air- Detailed modeling for repair development and support for damage tolerance craft modeling and simulation. analysis Structural Repair and Modification Experience

Damage Tolerance n Expand/review/refine existing n FEM usage; development of component repair scheme Analysis (DTA) finite element models (FEM) n Models for composite repair of metallic structures n Idealization of wing, fuselage Durability and and specialized structural models n Modeling of composite materials Damage Tolerance Analysis (DADTA) n Experimental validation of FEM n Analysis of repair and maintenance actions

n New finite models from geometric n Engineering support at customer location Structural Life models (CAD) or historical loft Enhancement data

Simulation

Idealization

Validation D015727

Typical FEM stress contours on deformed wing Analysis Tools

n MSC.NASTRAN®, ANSYS®, ABAQUS® FEM solvers

n StressCheck®

n PATRAN®, FEMAP, Pro/ENGINEER® pre- and post-processors

n Software supported by high-end PC platforms for multiple users simultaneously D015728

Full aircraft FEM development, verification, validation and analytical application

Benefiting government, industry and the public through innovative science and technology

Southwest Research Institute is an independent, nonprofit, applied engineering and physical sciences research and development organi- zation using multidisciplinary approaches to problem solving. The Institute occupies 1,200 acres in San Antonio, Texas, and provides more than 2 million square feet of laboratories, test facilities, work- shops and offices for more than 3,100 employees who perform contract work for industry and government clients.

We welcome your inquiries. Kenneth E. Griffin, Ph.D., Manager David H. Wieland, Principal Engineer Aerospace Structures Aerospace Structures For additional (210) 522-6873 (210) 522-3864 information, [email protected] [email protected] please contact:

Department of Structural Engineering Mechanical Engineering Division Southwest Research Institute 6220 Culebra Road (78238-5166) P.O. Drawer 28510 (78228-0510) San Antonio, Texas

An Equal Opportunity Employer M/F/D/V www.swri.org Committed to Diversity in the Workplace www.aerospacestructures.swri.org 18-0411 JCN 240614 18-0411 bl