Aspects of seat modelling for seating comfort analysis

The development of more comfortable seats is an important issue in the automotive industry. However, the development of new car seats is very time consuming and costly since it is typically based on experimental evaluation using prototypes. Computer models of the human-seat interaction could accelerate this process. The objective of this paper...

A seat sensitivity study on vertical vibrations and seat pressure distributions using numerical models

Numerical prediction of seating position in car seats

Two of the main design objectives for car interiors are comfort and safety. These aspects are both determined by the seating position of the occupant. Seat manufacturers use the SAE Three-Dimensional H-Point Machine™ to measure seating positions to design, audit, and benchmark seats. The seating positions measured with the H-Point Machine form...

Investigation of seat pressure distributions at the human-seat contact interface by analyses with a FE Buttocks model

Prediction of seat pressure distributions by numerical simulations

Estimation of spinal loading in vertical vibrations by numerical simulation

Objective. This paper describes the prediction of spinal forces in car occupants during vertical vibrations using a numerical multi-body occupant model. Background. An increasing part of the population is exposed to whole body vibrations in vehicles. In literature, vertical vibrations and low back pain are often related to each other. The cause...

Human modelling for automotive seating comfort

Numerical human model for impact and seating comfort

This paper presents a detailed numerical model of the human body that can be used to evaluate both safety and comfort aspects of vehicle interiors. The model is based on a combination of rigid body and finite element techniques to provide an optimal combination of computational efficiency and accuracy. All main articulations are implemented and...

Development of a FEM pelvis model for analysis of pressure distributions

Higher demands by people on the performance of vehicles and the comfort-related physical complaints by professional drivers have led to an increasing demand for more comfortable cars. Car manufacturers use comfort as an item to distinguish themselves from their competitors. However, the development and introduction of a new, more-comfortable car...

Vibration analysis with MADYMO human models

The importance of comfort for the automotive industry is increasing. Car manufacturers use comfort to distinguish their products from their competitors. However, the development and design of a new car seat or interior is very time consuming and expensive. The introduction of computer models of human and seat could accelerate this process. This...

Comfort analysis with MADYMO human models

Determination of human-seat-interaction in vertical vibrations in MADYMO

The importance of automotive comfort is increasing, both socially and economically. Especially professional drivers often have comfort-related physical complaints, such as lower back pain. In addition, car manufacturers can use comfort to distinguish their cars from their competitors. However, the development and design of a new, more...

Simulation of human seated postures and dynamic seat interaction in impact conditions

Prediction and assessment of seated postures are essential for ergonomic vehicle design whereas dynamic seat interactions are essential for impact conditions. This paper presents seat models and human models for both applications. An interface has been developed to convert RAMSIS human models and postures to MADYMO. Static seat interaction...