[Case Study] Eigenvalue Analysis of Engine Block 'AIFEM'

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last updated：Mar 13, 2025

FsTech

Accurately evaluate the natural frequency and mode shapes of the engine block! Obtain information that leads to performance improvement in the design phase!

We will introduce a case study on eigenvalue analysis of engine blocks using the general-purpose finite element analysis software AIFEM. The eigenvalue characteristics of the engine block are crucial factors that influence the overall operational stability and durability of the engine. In particular, they relate to the operational lifespan and reliability of key components such as the piston, cylinder liner, and crankshaft, and they also significantly impact the engine's NVH (Noise, Vibration, and Harshness) performance. The effects of external excitation are particularly pronounced in the lower four mode frequencies, where resonance can lead to amplified vibrations. Therefore, it is essential to identify the main mode shapes and frequencies through eigenvalue analysis and implement appropriate design measures. Applications of this analysis: ■ To avoid the risk of resonance and prevent damage due to excessive vibrations ■ To enhance comfort by optimizing NVH performance ■ To find the optimal balance between lightweight design and rigidity *For more details, please download the PDF or feel free to contact us.

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【Case Overview】 ■Analysis Target: Engine Block ■Analysis Software: AIFEM ■Analysis Evaluation: Displacement distribution of each mode shape (torsion, bending) 【Features of AIFEM】 ■Intuitive and simple operability ■High-precision finite element method solver ■Various analysis functions (structural static analysis, structural vibration analysis, heat transfer analysis, heat transfer-thermal stress coupled analysis, topology optimization) 【Overview of AIFEM Functions】 ■All operations can be performed with the same GUI ■High-quality meshing ■Efficient analysis condition settings ■Intuitive and rich result verification features *For more details, please download the PDF or feel free to contact us.