لا يوجد شك في أن أهمية تقليل أعمال صيانة الآلات و المحافظة على إمكانية إنجاز نفس الهدف بآلة وزنها أقل و بدون احتكاك تزداد يومياً. إن استخدام المفاصل المرنة في منظومة ما يحقق جميع هذه الفوائد . لنأخذ الآن منظومة ميكانيكية مستوية مكونة من الألة الرباعية و السداسية و بمفاصل دورانية , لنبدل بعد ذلك المفاصل الدورانية بمفاصل عالية المرونة. نحصل بإجراء ذلك على منظومة متينة تنجز نفس الهدف باستخدام أقل للطاقة.
إن الهدف الرئيسي للبحث هو بناء جهاز رياضي (مجموعة من العلاقات) قادر على تقييم الازاحات للمنظومة المعتبرة قبل و بعد التبديل آخذين بعين الاعتبار أن المنظومة الجديدة ينتج عنها إزاحات إضافية (ناتجة عن المرونة العالية) كبيرة.
There is no doubt that the importance of decreasing maintenance
and having the same ability to achieve the same target with low
weight and no friction in nowadays artificial applications, is daily
increasing. Using flexural(also flexure) hinges in a system, at least,
leads to all of that advantages. We are going to take a planar
mechanical system consisted of four bar mechanism and six bar
mechanism, with revolute, after that we replace each revolute joint
with super elastic hinge. Doing so we have a gate to build a system,
strongly recommended, to achieve the same goal using minimum
energy.
The main purpose of this research is to elaborate a mathematical
apparatus able to estimate the deviation of the considered system
before and after replacing revolute hinges taking into account the
real performance of the novel system through large bending
displacements in the flexure(flexural) hinges.
References used
B. Williams, 2012 - Atlas of Structures, Mechanisms,and Robots. Britain. 365p
Howell, A. Midha, 1994 – A Method for the Desing of Compliant Mechanisms With Small-Length Pivots, Journal of Mechanical Desing,, vol. 116. 280-290
R. Zhang, 2003 - Kinematic and dynamic performance of ، prosthetic knee joint using six-bar mechanism ,Journal of Rehabilitation Research and Development, Vol. 40NO1 Pages 39–48
The too many uses of the five- bar mechanism and the seven-bar
one in novel mechanical systems, lead us to develop the action of
the both mechanisms. Compacting the both mechanisms gives
ability new mechanism with dual action. It is that the new o
The most of companies wish to decrease maintenance and have the
same target with low weight and no friction even costs much
money, when a machine is built. Using flexural(also flexure) hinges
in a system, at least, leads to all of that advantages.
The main purpose of this
research is to elaborate a mathematical apparatus able to estimate
the deviations of the considered system before and after replacing
revolute hinges taking into account the real performance of the
novel system through large bending displacements in the flexure
(flexural) hinges.
We have a plane mechanical system
consisted of pantograph mechanism and four bar one, with revolute
and sliding joints. Then, we replace each revolute joint with super
elastic hinge. So that, we have a system, strongly recommended, to
achieve the
The importance of pantograph mechanism and four Bar one leads
to improve of two mechanisms. As we said in last papers,
decreasing maintenance and having the same goal with low weight
and no friction in nowadays artificial applications, appears as