Searched for: subject:"Loads%5C+%5C%28forces%5C%29"
(1 - 10 of 10)
document
Koopman, A.S. (author), Kingma, I. (author), de Looze, M.P. (author), van Dieën, J.H. (author)
Low-back pain is the number one cause of disability in the world, with mechanical loading as one of the major risk factors. Exoskeletons have been introduced in the workplace to reduce low back loading. During static forward bending, exoskeletons have been shown to reduce back muscle activity by 10% to 40%. However, effects during dynamic...
article 2020
document
Koopman, A.S. (author), Toxiri, S. (author), Power, V. (author), Kingma, I. (author), van Dieën, J.H. (author), Ortiz, J. (author), de Looze, M.P. (author)
With mechanical loading as the main risk factor for LBP, exoskeletons (EXO)are designed to reduce the load on the back by taking over part of the moment normally generated by back muscles. The present study investigated the effect of an active exoskeleton, controlled using three different control modes (INCLINATION, EMG & HYBRID), on spinal...
article 2019
document
Koopman, A.S. (author), Kingma, I. (author), Faber, G.S. (author), de Looze, M.P. (author), van Dieën, J.H. (author)
With mechanical loading as the main risk factor for LBP in mind, exoskeletons are designed to reduce the load on the back by taking over a part of the required moment. The present study assessed the effect of a passive exoskeleton on back and abdominal muscle activation, hip and lumbar flexion and on the contribution of both the human and the...
article 2019
document
Boorsma, K. (author), Greco, L. (author), Bedon, G. (author)
Results from the EU AVATAR project have indicated vortex methods generally to be in good agreement with computational fluid dynamics simulations for resolving rotor aerodynamic forces in a variety of operational and inflow conditions. Limitations of the more crude blade element momentum method, most widely used in industry, have been exposed....
conference paper 2018
document
Maljaars, J. (author), Steenbergen, R.D.J.M. (author)
The operating mechanisms of movable bridges are subjected to various types of fluctuating loads which may induce fatigue damage. Wind load acting on the bridge deck - when the bridge is open - is one of the important load types. A wind load model is proposed that can be used in the fatigue design verification. The model is based on wind...
article 2012
document
Correia Grácio, B.J. (author), Wentink, M. (author), Groen, E. (author), Bles, W. (author), TNO Defensie en Veiligheid (author)
In centrifuge simulators pilots experience the G-forces and fast G-onsets encountered in the real fighter aircraft. The motion cueing principle that drives these simulators is based on creating G-forces by increasing the centripetal force of the centrifuge through a rotation of the simulator arm. The centrifuge usually spins at a constant 1.4 G...
conference paper 2009
document
Maljaars, J. (author), Stark, J.W.B. (author), Steenbergen, H.M.G.M. (author), TNO Bouw (author)
Copes and partial endplates influence the resistance to lateral buckling of a steel beam. In order to quantify this influence, numerical research has been carried out with validated models. Full-scale laboratory tests carried out for the validation of the numerical models are described in the Annex to this paper. The research resulted in...
article 2004
document
de Looze, M.P. (author), Kuijer, P.P.F.M. (author), Society of Automotive Engineers (author)
In pushing and pulling wheeled objects, the effect of the exerted force on local musculo-skeletal loads depends on the direction of force exertion. Several questions about the direction of force exertion in pushing and pulling, the effects of handle height and force level on force direction, and the quantitative implications for musculoskeletal...
conference paper 1999
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Vrouwenvelder, T. (author), Instituut voor Bouwmaterialen en Bouwconstructies TNO (author)
The JCSS is developing a model code for full probabilistic design. This note gives an overview of the set up and contents of this code. © 1997 Elsevier Science Ltd.
article 1997
document
Verheij, F.J. (author), Cleijne, J.W. (author), Leene, J.A. (author), TNO Milieu, energie en procesinnovatie (author)
In this paper the TNO gust analysis method and the resulting TNO gust model are described. The method has been applied to a set of 700 hours of stationary wind speed time series measured at the meteorological mast at Cabauw, The Netherlands. The results are discussed in this paper. The TNO gust model has been developed for the calculation of...
article 1992
Searched for: subject:"Loads%5C+%5C%28forces%5C%29"
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