Biomechanics and Ergonomics

Espaņol   -   English

Biomechanics of the human hand

The objective of this research is the highest knowledge of the biomechanics of the human hand. This line of research began with the development of the doctoral thesis of Ximo Sancho (2001): "Biomechanical Model of the human hand with application to the design of hand tools." The work of this thesis led to the development of a scalable three-dimensional model of the hand that covers all its degrees of freedom. Although the model was developed for application to the ergonomic design of tools, it was later also used in the study of several medical problems of the hand. Different projects in this research line have analysed the biomechanics of human grasping in everyday activities of both healthy and pathological subjects, for application to rehabilitation or design of adapted products.

 

Artificial hands

The objective of this  research line is the design of artificial hands for prosthetic or robotic use. The aim is to apply the knowledge about biomechanics of the human hand to the design of artificial hands and to the development of methods for evaluating their functionality and performance. Different projects have been developed with public funding, such as DEVALHAND, BENCH-HAND, UNIQUE-HAND, among others.

 

Dental Biomechanics

The objective of this research area is the biomechanical analysis of dental structures and dental restorative systems such as endodontic posts or implants, to optimize its design. This will work with a dual methodology: simulation using virtual finite element models of the system and testing  'in vitro' with static and fatigue testing machines. The group has developed a broad research in this area over the past 10 years in different projects (PILARES, OPTIPERN), with a large number of publications and the design and manufacture of a fatigue testing machine for dental components.

 

Emotional design

This line of research aims to develop, improve and implement methodologies for emotional design and to integrate them into an overall methodology of user-centered design. In today's market, consumers will not only value price, functionality, usability and product safety (aspects related to ergonomics) but also values the emotions and feelings that products provide. Consequently, in an increasingly competitive market, a good product should meet all expectations of the consumer, but especially to produce a positive emotional response. The emotional design methodologies, allow to capture the emotional needs of users and to establish relationships between them and the characteristics of the product, so that the design can incorporate the features that best reflect the emotions intended. In a first project (HERR-KANS) the methodologies for emotional design were set-up for the design of hand held tools.

 

Ergonomics of hand tools

This one was the first research line of the group, started in 1995. Its objective is a sound knowledge of the ergonomics of grasping in hand held tools, both hand operated and powered tools, with the final objective of improving its design. In two projects of this line (ERGOHERR and PRECIMOD) the grasping process was analyzed for hand operated tools and the methodology for ergonomic assessment was established. In a later project (HERRMOT) the same question was studied for powered tools.

 

Knee biomechanics

The objective of this line of research is the study of knee biomechanics using simulation models. The group has worked in this area in two projects (SIMROD) with the final objective of having a model with application to the optimal design of knee prosthesis. There is in progress a doctoral thesis with the objective of developing a stable version of this model, allowing to compare different prosthesis models in several day life activities, as level walking or stairs ascent.

 

Foot biomechanics

This is the last research line undertaken by the research group, associated to the development of the doctoral thesis of the podiatrist Enrique Sanchis Sales. The aim of this thesis is the analysis of the dynamic stiffness of foot joints during normal gait, and how foot joint dynamic stiffness is affected by the foot posture index (pronation-supination indicator).