Optimization of train ceiling and monitor gondola structures: ensure compliance and strength in railway vehicles.

Enhance structural integrity in regional passenger trains

In the railway industry, structural integrity and compliance, together with rigorous safety standards, are essential to ensuring the durability, reliability, and safety of passenger train components. With increasing demands for lighter, stronger, and more efficient designs, manufacturers need advanced engineering solutions to adjust, validate, and optimize their products.

At Endego, we specialize in analysis, assessment and structural optimization of railway components involving the Finite Element Method (FEM). In a recent collaboration with a Client, Endego’s team conducted a comprehensive strength analysis and optimization of the internal ceiling and monitor gondola structure for a regional passenger train, and ensured full compliance with railway engineering standards.

Project challenge: compliance with stringent railway standards

The Client sought an in-depth structural assessment of:

• the internal ceiling structure including its mounting system;
• the ceiling-mounted gondolas for monitors.

These components had to meet the requirements of the EN 12663-1 standard which is a crucial railway vehicle standard governing structural integrity under static and dynamic loads, during regular operation and at exceptional events. Additionally, welded and bolted connections had to comply with the following standards and guidelines:

• DVS 1612 and DVS 1608 (fatigue strength of welded connections for railway applications)
• VDI 2230 (bolted connections and joint optimization)

In cases when after primary check the structures failed to meet these strength and durability criteria, the Endego team was tasked to optimize their structure while ensuring ease of manufacturing and cost-effectiveness.

Our approach: advanced engineering simulations & structural optimization

To meet the Client’s requirements, Endego CAE virtual validation team applied high-precision Finite Element Analyses (FEA) and fine modelling techniques for connection joints.

Key steps in the analysis:

1. Creation of detailed FE models:
   • A computational model of the ceiling assembly and monitor gondolas was developed which incorporated material properties, structural geometry, and loading conditions.
   • The welded and bolted joints were modelled using realistic constraints to simulate actual operating conditions accurately.
2. Strength and compliance assessment:
   • The structures were analyzed under real-world operational loads, including vibrations, fatigue stresses, and static loads.
   • Failure modes such as excessive deformation, stress concentration, and connection weakness were evaluated to determine whether the structures meet the requirements of the EN 12663-1 standard and of the other relevant guidelines.
3. Structural optimization:
   • Working closely with Client’s engineering team, Endego specialists optimized the structural parameters and joint configurations to enhance strength while maintaining manufacturability.
   • Material thickness, reinforcement placements, and fastener selections were refined to improve durability without excessive weight increase.

Through simulation driven optimization, the train’s ceiling and monitor gondola structures were successfully modified and adapted to achieve full compliance with railway industry standards.

Project outcome: Reliable, Compliant, and Scalable Train Components

The strength-optimized ceiling and gondola structures, as verified by Endego engineering team, ensure safe and failure-free operation for years to come. The key benefits for the Client include:

• Fully compliant railway components, meet the strict European requirements.
• Enhanced structural integrity to withstand long-term operational stresses and vibrations.
• Increased production capacity for complex railway components, supporting business expansion.
• Strengthened partnerships with major passenger train manufacturers, reinforcing the Client’s industry position.

By providing CAE analysis, Endego helped the Client streamline design validation, optimize structural performance, and reduce risks for manufacturing and assembling defects.

At Endego, we offer structural optimization, engineering simulation, and compliance verification for railway, automotive, and industrial applications. Our expertise in FE modelling, welded connection analysis and fatigue strength assessment helps manufacturers enhance product safety, durability and cost efficiency.

If your company is looking for engineering support in railway vehicle design, structural integrity assessment, or component optimization, contact us today! Our team is ready to help you achieve the highest standards of performance and safety in your projects.

📩 Get in touch with us to discuss your Project.