Introduction
Various analyses are required to prove the strength of components under certain conditions in the process of developing and producing new power plant components. A leading company working in the international power plant sector required this work, which related to the design of a blade carrier with instrument holes for gas turbines.

Capacity bottlenecks caused the company to place this project externally. Experts from IndustrieHansa, who were able to demonstrate their FEM skills, were tasked with this job. The finite element method was used to calculate stresses in the component - a process requiring both excellent ANSYS knowledge and extensive expertise in evaluating the stresses calculated.

Solution: Complete thermomechanical design of blade carrier with instrument holes including an operating strength analysis.

Puncture points

• Analysis of the global and local distribution of temperature, stress and deformation
• Analysis of the course of temperature, movement and stress throughout the process
• Provision of the static strength analysis
• Calculation of thermal deformation (e.g. ovalization)
• Use of sub-model technique to model small design elements (instrument holes)
• Evaluation of primary and secondary stresses according to pressure vessel directive
• Calculation of operating strength analyses using modern procedures (e.g. according to Neuber and Manson-Coffin)

Benefits
The calculations and evaluations undertaken by the IndustrieHansa specialists confirmed for the customer the technical feasibility of the assembly investigated. This computer-based analysis satisfied the preconditions to approve construction of the turbine component.

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