Finite element analysis reveals backrest type alters biodynamics and vibration response in seated individuals, highlighting design implications.
Key Points
The peak frequencies of head and neck response increased by 33% for non-ergonomic backrest and 55% for ergonomic backrest, enhancing vibration control.
Modal frequencies significantly influenced by backrest types were recorded at 5.45 and 7.33 Hz for ergonomic support, showing crucial biodynamic variations.
Finite element model analysis under vertical excitation identifies stress peaks at cervical segments, indicating key areas for ergonomic improvements.
Ergonomic backrests reduced vertical cervical response and increased anterior-posterior stability, suggesting better design criteria for seat safety.