نتایج جستجو برای: tension leg structure (tls)

تعداد نتایج: 1646798  

Journal: :international journal of marine science and engineering 2013
m. r. tabeshpour b. ataie ashtiani m. s. seif a. a. golafshani

because of fluctuation in leg tension, pitch motion is very effective fatigue and life safety of leg elements in tension leg structures (tlss). in this paper an exact solution for pitch vibration of a tls interacting with ocean wave is presented. the legs of tlp are considered as elastic springs. the flow is assumed to be irrotational and single-valued velocity potentials are defined. the effec...

A. A. Golafshani B. Ataie Ashtiani M. R. Tabeshpour M. S. Seif

Because of fluctuation in leg tension, pitch motion is very effective fatigue and life safety of leg elements in tension leg structures (TLSs). In this paper an exact solution for pitch vibration of a TLS interacting with ocean wave is presented. The legs of TLP are considered as elastic springs. The flow is assumed to be irrotational and single-valued velocity potentials are defined. The effec...

Journal: :international journal of marine science and engineering 2012
m. r. tabeshpour r. shoghi

tension-leg platform (tlp) is a vertically moored floating structure. the platform is permanently mooredby tendons. surge equation of motion of tlp is highly nonlinear because of large displacement and it should be solved with perturbation parameter in time domain. this paper compare the dynamic motion responses of a tlp in regular sea waves obtained by applying three method in time domain usin...

ژورنال: مهندسی دریا 2015

Tension leg platform is a compliant structure with vertical moorings and added buoyancy force. In this paper, effective parameters on experimental modeling of TLPs have been investigat. experimental modeling with correct scale factor has been done in Sharif University of Technology marine engineering laboratory test basin. deep water simulation capability were discussed and finally the model, l...

Journal: :Journal of biomechanics 2008
Fumiya Iida Jürgen Rummel André Seyfarth

Compliant elements in the leg musculoskeletal system appear to be important not only for running but also for walking in human locomotion as shown in the energetics and kinematics studies of spring-mass model. While the spring-mass model assumes a whole leg as a linear spring, it is still not clear how the compliant elements of muscle-tendon systems behave in a human-like segmented leg structur...

Journal: :Spine 2010
Moon-Kyu Kim Dai-Soon Kwak Sin-Soo Jeun Chun-Kun Park Sae-Moon Oh Sang-Won Lee Seung-Ho Han

STUDY DESIGN A descriptive cadaveric study measuring arterial tension. OBJECTIVE Anterior lumbar surgery is technically challenging due to perioperative vascular complications. Many studies suggest approaches based on the anatomy of the abdominal vessel for safe vascular mobilization. However, the tension in the vascular structure is also important for adequate exposure of the target lesion. ...

Journal: :Journal of Naval Architecture and Marine Engineering 2014

Journal: :Journal of the Society of Naval Architects of Japan 1979

ژورنال: مهندسی دریا 2007
حبیبی, بهزاد, شفیعی فر, مهدی,

Tension leg platforms are compliant structures for oil extraction in deep water consisting of hull, deck foundation, tendons and risers. The hull is very important part of a TLP from functionality, weight and cost point of views that is made of vertical column and horizontal pontoon with circular and rectangular sections. The hull geometry plays very important rule in optimum action of the stru...

Journal: :Journal of neurology, neurosurgery, and psychiatry 1984
W Berger G Horstmann V Dietz

In 15 patients with spastic hemiparesis the development of tension of calf muscles in relation to their electrical activation and their stretching period was studied on both sides during locomotion. Only in the spastic leg did isolated small biphasic potentials appear in the gastrocnemius E.M.G. with monosynaptic latency at the beginning of the stance phase, while the remaining gastrocnemius ac...

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