Summary:

• Finite element slotting analysis of Fan impeller assembly
• FE Modeling done in Hypermesh using 10–node Tetrahedron Elements and carried out further Stress Analysis.
• Model size: Around 100000 elements
• Material used : Aluminum alloy 6061-T6 per AMS4117
• The optimum size of the slots were arrived at, to cause the tri-hub failure of the fan impeller.

Summary:

• Containment Analysis for simulating tri hub failure in transient domain.
• Hypermesh is used for preprocessing and LS-Dyna is used for transient analysis.
• Nozzle 2nd stage, Turbine 2nd stage, Containment ring and Combustor assemblies are considered for containment analysis.
• Tri-hub (3 pieces) of Turbine 2nd stage subjected to velocity 41,955 rpm and gravity
• Tri-hub failure is simulated to predict rupture of stator and containment ring.
• Deliverable are predicting energy absorbing capability of containment ring.

Summary:

• Low Cycle Fatigue Analysis of Mount Lug
• FE Modeling done in Hypermesh using 10-node Tetrahedron Elements, contact elements.
• Stress analysis carried out to estimate stress factors.
• Fatigue analysis (Crack initiation and Crack propagation)
• FE Model : 0.2 million DOF.
• Fatigue life estimation, crack propagation after crack initiation, No. of Life cycles before component failure.

Summary:

• Generation of optimal design for stress, manufacturability, functionality and cost
• Input – Rough concept

• Limited packaging space
• Manufacturability of the complex ribs and walls

• Mesh Generated using Hypermesh
• Design optimized for weight using Optistruct
• Reduced stress levels
• Optimized the design with reduced weight and increased rigidity by providing adequate ribs.

Summary:

• Generation of optimal strength and rigidity.
• Input – Rough concept

• Short Lead-time
• Manufacturability of the complex ribs and walls

• Mid-surfaces were extracted and 2D mesh was generated in Hypermesh. Stress analysis was carried out for various loading conditions and the design was optimized for weight using Optistruct.
• Design optimized for weight using Optistruct
• Optimized the design of Chassis was achieved with reduced weight and increased rigidity.