Structural analysis is an important part of our engineering toolkit, allowing us to predict the structural and thermal characteristics of hardware before committing resources to further stages of the development process or to inform our test activities. Using a range of available techniques, we can support system design decisions and optimise performance, demonstrate compliance with industry design codes, or to understand the cause of component failures.

Depending on the nature of the problem, we can employ classical methods or more complex finite element models. Where possible, we correlate analysis results with our test results to ensure that our models accurately reflect reality.

ESR Technology are able to perform a wide range of structural analysis including:

• Static: linear and nonlinear
• Linear dynamic: modal, harmonic, response spectrum, and random vibration analyses
• Thermal and thermo-elastic analysis
• Buckling
• Fatigue
• Bolted joints


Tribological analysis

Our specialism in tribology means that we are familiar with a range of techniques associated with analysis of contacts and lubricant performance. Contacting surfaces perform specific functions and may be related to separable, sliding or high friction interfaces with varying requirements. Where hardware design incorporates contacting surfaces, we can perform analysis of Hertzian stresses and assess the impact of material selection and surface finish. Where we have test data for lubricant lifetime in a particular environment, we can also assess the suitability of these for the desired application. For fluid lubricants we can also assess the operational regime and consider any operational constraints that may apply.

Our experience in analysing tribological systems, test experience with a range of lubricant and material combination, and our understanding of failure mechanisms is key to our ability to develop reliable and robust mechanical hardware for the most demanding applications.

System performance and degradation

The hardware we develop rarely operates in isolation. As such, it is important to understand the performance so that this is taken into consideration when implemented into a higher-level system.

We can support system level development with functional analysis of our hardware. For example, this might be the calculation of error budgets for the subsystem which might consider the selection of certain actuators and sensors, tolerance analysis, thermo-elastic distortions, and dynamic stability amongst other contributions.

The data generated from test rigs or condition monitoring systems (where the hardware exists already) is rich in information, which may inform our engineers about the performance or degradation of mechanical systems. We are able to process and analyse such data to aid our understanding of particular characteristics or potential failures in machinery and to communicate this information within engineering teams.

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