COMPUTER AIDED ERGONOMIC AND

AESTHETIC DESIGN

INTERNATIONAL DESIGN CONFERENCE - DESIGN

2004

Dubrovnik, May 18 - 21, 2004.

AUTHERS : J. Kaljun and B. Dolšak

Prepared By:GAURAV PATEL (14MMCC16)JIGAR PATEL (14MMCC17)KRUNAL PATEL (14MMCC18)

Introduction

• When designing a product for every day use, designer has to consider various

influential factors, among them aesthetics and ergonomics are very important.

• What is Ergonomics? - a field of study dealing with the comfort and safety of

the human body by adjusting tools, work stations and work processes to fit the

worker.

• Aesthetic : The term 'aesthetics' concerns our senses and our responses to an

object. If something is aesthetically pleasing to you, it is 'pleasurable' and you

like it.

• Designers are confronted with higher ergonomic demandsevery day.

• Such condition led to development of various computer aidedtechniques for evaluating human performances in a certainworkplace.

• This kind of software usually includes biomechanical dataabout the potential user of the product, metabolic rateprediction, reach assessment, and time prediction

• Among various influential factors that are important for thesuccess on the market the aesthetics is often the decisive one.

• This paper presents the present state-of-the-art in the field ofcomputer aided ergonomic design and some developmentdirections for computer aided aesthetics design tools

Ergonomic CAD software

• The possibility to combine the ergonomic data from multiple sources would

enable designer to use a single analysis tool to assess clearances, reach,

visual requirements, and postural comfort at the earliest stages of design

• It would make possible for designer to incorporate the important features

into designs

1. Three-dimensional Modelling of the working place and equipment,

• 2. Three-dimensional human form Modelling to represent various,

anthropometries and postures

3. Evaluative techniques to assess reach, vision, fit and posture, etc.

• Two different approaches to development of such software tools are

(i) Stand-alone ergonomic CAD software

(ii) Compatible ergonomic CAD software

Representatives of both groups of ergonomic CAD software

Stand-alone ergonomic CAD software

• SAMMIE

• APOLIN

• TADAPS

• Deneb/ERGO

• ERGOMAN

• ErgoSPACE

Compatible ergonomic CAD software

• SAFEWORK

• MINTAC

• ErgoSHAPE

• HUMAN

• RAMSIS

• ANYBODY

ERGOMAN and RAMSIS

Stand-alone ergonomic CAD software Compatible ergonomic CAD software

Stand-alone ergonomic CAD software

• The stand-alone ergonomic software is functional independently of the

other CAD software used in product development process.

• Thus, for many of these systems, the users must learn terminology,

command structures, and Modelling techniques that are different from

those in the commercially available CAD systems.

• Fortunately, many of these systems have the ability to import the

geometric models modelled in other CAD software, where the

complexity of the models can be taken in consideration.

Product development cycle using Stand-alone ergonomic software

Compatible ergonomic CAD software

• As distinguished from the stand-alone ergonomic CAD software, the

compatible ergonomic software has been designed to be accessed within a

CAD system.

• These systems take the advantage of the designers' familiarity with the

terminology, techniques, and command structures of commercially

available CAD programs.

• the application of a single geometric model for all phases of the design

process is also very important.

• Likewise using stand-alone ergonomic CAD software, the development

process starts with the concept design and usually ergonomically imperfect

concept, which represent the starting point for the compatible ergonomic

CAD software

Product development cycle using Compatible ergonomic CAD software

Computer aided aesthetic design

• There is the gap in the computer-aided process chain due to the aesthetic

design phase still represents a serious problem

• Designer have to trust to his or her aesthetic abilities and feeling in order to

perform product design of complex-shaped products like car hoods,

consumer appliances, toys, packaging, etc..

• Two European projects..

(i) FIORES

(ii) FIORES II

Formalization and Integration of an Optimized Reverse Engineering Styling

Workflow

• Aim of this projects at building innovative CAD tools that adhere to the

creative user mentality and at improving the cooperation between the main

players involved in the product development process.

Intelligent advisory system with expert knowledge

• For suitable design solutions, designer needs to consider different factors among those

aesthetic and ergonomics are important.

• Less experienced person may face many problems in this stage of design.

• CAD software can give a better solution but, it can’t give designer’s skill and

experience.

• Here comes the role of Intelligent advisory system.

• It provide expert advice to designer at aesthetic and ergonomic stage.

Aesthetic and ergonomic design cycle using intelligent advisory system

1. Firstly, design is prepared, then advisory system is used to improve

the aesthetic an ergonomic values.

2. Modeling is done in CAD modeller , here the ergonomic analysis

and aesthetic evaluation is done.

3. Advisory system will advise whether to redesign to improve the

aesthetic and ergonomic value.

General architecture of advisory system

• Investigating and collecting data of theoretical and practical knowledge

about design and redesign.

• After that formulation is done, commonly used rule for encoding formalism

is production rule.

• Collected rules will make knowledge base for system.

• Encoding rules by prolog syntax and developing of system.

conclusion• As the cad software don’t provide the exact solution to design

it provides as similar types of design values.

• As the aesthetic and ergonomic is important factors in design

process, we need to use CAD software and advisory systems

for optimize design.

• Which should provide designer optimize advice during

designing and redesign of product.

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