RAMSIS

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RAMSIS is a 3D human model in the form of software for the ergonomic analysis of CAD constructions. The term RAMSIS is an acronym for computer-aided anthropometric- mathematical system for occupant simulation .

Use or properties

RAMSIS is used for ergonomic analysis and design support for products and workplaces during the design phase on the basis of CAD geometry. It complements the three-dimensional construction models of components with a scalable functional geometric model of the human being. On this basis it is possible to check the respective human-machine interface of a later technical product in detail. RAMSIS represents the characteristics and needs of different people when dealing with technical products. This can be done in the computer before the first 1: 1 model or prototype is produced . RAMSIS is used primarily in the development of all types of air and ground vehicles and construction machinery. The special domain of RAMSIS is the checking of the occupant conditions of vehicles when used by the driver and passengers . In the area of product development for passenger cars , RAMSIS represents a standard for ergonomic design and is used by around 90% of manufacturers worldwide. The design of workplaces in production and office is an extended area of ​​application.

RAMSIS can scale the manikin according to the real body dimensions and uses a multidimensional statistical database for this. This not only makes it possible to reproduce the ergonomically relevant body dimensions of women, men and children with regard to a very small and very large body length . RAMSIS can also geometrically represent the characteristic proportions, which are known under the terms " seat giant" and " seat dwarf ", as well as the corpulence variations. The additional module 'RAMSIS Body Builder' enables a detailed, multidimensional setting of 18 body dimensions within the statistical limits. Since the body dimensions of a population are subject to an average increase of around 10 mm per decade, the so-called secular acceleration , the body dimensions can be statistically forecast for the future.

RAMSIS has an anatomical mobility model for its body joints and a posture model that can specifically simulate and evaluate the posture adopted in the respective vehicle according to comfort aspects . On this basis, RAMSIS can predict the positions and postures, the space requirements, the accessibility, the range of motion, the activities, the handling forces and the view. In the 'RAMSIS cognitive' module, several functions for simulating human visual conditions enable predictions of visual perception .

The industry uses this ergonomics software intensively to carry out the ergonomic design of a product easier, faster and cheaper than iterative optimization of a prototype by means of testing by test persons. RAMSIS not only exists as an independent stand-alone computer program, but also as a module embedded in the CATIA V5 CAD system . This can reduce the need for costly data conversions for recursive analysis and construction sequences. As an analysis and simulation program, RAMSIS can be assigned to computer-aided engineering (CAE), although it is used directly together with CAD .

history

RAMSIS was developed between 1987 and 1994 as part of a research project by the Research Association for Automotive Technology (FAT) of the Association of the Automotive Industry (VDA). The reason for the development of digital human models since the late 1960s and especially in the 1970s was the need for the construction of complex products, such as that of a vehicle, to use an adequate design tool for ergonomic issues within the CAD design environment. The two-dimensional body outline templates used up to then, such as the SAE template or the “ Kiel doll ”, did not meet this requirement.

The scientific development of the ergonomic fundamentals of the system took place mainly at the Chair of Ergonomics (LfE) of the Technical University of Munich (TUM) under Professor Heiner Bubb . The software development and international sales are carried out by Human Solutions GmbH in Kaiserslautern (formerly Tecmath AG).

After completion of the FAT project, RAMSIS was owned by a consortium of the German automotive industry consisting of the manufacturers AUDI AG , BMW AG , Daimler AG , Ford -Werke GmbH, Adam Opel GmbH, Dr. Ing.hc F. Porsche AG , Volkswagen AG and the automotive supplier Johnson Controls (JCI Beteiligungsgesellschaft GmbH).

After completion of the research project, RAMSIS was converted into a commercial product and has been offered as simulation software to other users outside the German automotive industry since 2002 by Human Solutions GmbH. Since then, RAMSIS has continued to spread across the world. The functional development also continued steadily. Special functions for a wide variety of applications lead to a continuous expansion of the software.

The RAMSIS Excellence Award has been presented since 2007, a scientific prize for vehicle ergonomics that is named after the human model.

literature

  • FAT report 123: “RAMSIS - a system for the collection and measurement of three-dimensional postures of people for the ergonomic design of operator and seats in the car” Frankfurt, 1995
  • FAT report 135: “Mathematical replication of humans - RAMSIS 3D soft dummy”, Frankfurt, 1997

Web links

Individual evidence

  1. ↑ Homo Sapiens Digitalis - Virtual Ergonomics and Digital Human Models. Retrieved July 10, 2019 .
  2. ↑ Take ergonomic requirements into account in the design. Retrieved July 10, 2019 .