In real operating conditions, components are exposed not only to static loads but also to continuous dynamic effects such as road irregularities, engine vibrations, sudden impacts, and speed variations. These repeated vibration loads gradually weaken materials over time and may lead to unexpected failures.
At FE-TECH İleri Mühendislik, we utilize ANSYS Mechanical’s Modal Analysis and Fatigue (S-N) modules to accurately predict how long a component can withstand vibration-based loading.
Because vibration is one of the most common causes of hidden durability issues.
Even a very small vibration, when repeated thousands or millions of times, can lead to:
Micro-crack initiation
Material weakening
Loss of stiffness
Final failure or field damage
In the automotive industry, components such as suspension arms, brackets, subframe parts, engine mounts, exhaust hangers, and chassis structures are highly sensitive to vibration-related fatigue.
The first stage is to determine how the component behaves dynamically.
Through modal analysis, we identify:
Natural frequencies
Mode shapes
Stiffness characteristics
Possible weak points
Resonance risks
If operating frequencies overlap with natural frequencies, fatigue life drops drastically due to resonance. Therefore, modal analysis is the foundation of fatigue prediction.
After modal analysis, the component is subjected to the actual vibration frequencies from its operating environment.
This stage reveals:
Stress levels
Vibration amplitudes
Critical zones
Frequency-dependent loading effects
These results are then used directly in the fatigue analysis module.
With ANSYS Fatigue, we evaluate the long-term effects of vibration on durability.
This analysis provides:
Fatigue life prediction (number of cycles)
Damage distribution
Identification of critical areas
Reinforcement and design improvement recommendations
Optional geometry optimization
The outcome is a component that is:
✔ Safer
✔ More durable
✔ Optimized
✔ Lighter
✔ Longer-lasting
We don’t just run simulations; we build the correct loading scenarios by understanding the real-life operating environment of the product.
Our capabilities include:
Creating component-specific vibration spectrums
Applying accurate S–N material curves
Identifying life-limiting regions
Design improvement and weight optimization
Fatigue calculations for welded and bolted joints
Detailed engineering reports and validation support
Suspension components
Subframe and underbody structures
Engine and transmission mounts
Exhaust hanger systems
Vehicle brackets and carriers
Any metal part exposed to dynamic loading
These analyses reduce unexpected failures and improve the efficiency, safety, and reliability of the development process.
Vibration-based fatigue analysis allows engineers to understand a component’s real durability during the design phase.
At FE-TECH İleri Mühendislik, we use ANSYS Mechanical’s advanced modal and fatigue capabilities to ensure that your products are safer, more reliable, and optimized for long-term performance.
FE-TECH İleri Mühendislik
📞 +90 (224) 502 45 55
📧 info@fe-tech.com.tr
🌐 www.fe-tech.com.tr