Specification of cross nonlinear vibration Of viscoelastic affective bar

this paper presents a solution of non-linear viscoelastic bar systems transversal vibrations problems in presence of biological factor. Governing differential equations were built, then analytical expressions of the solution of this equations were found, which describe transversal vibrations of a thin finite length bar

Comparsion Outcomes of Intramedullary Nailing Versus Conservative Treatment For Closed Shifting Isolated Fractures of The Middle Third Both Bones of Forearm in Children (9-14) Year Old

Background: Kid's body has major ability for remodeling and correcting all of displacement that could happened on fractures.There is many ways for treatment of these fracture,we can put them in tow guidelines: Surgical treatment, conservative treatment. Aim: Comparison between conservative treatment result and result of surgical treatment via ESIN in treatment of midshaft forearm fractures in children, and chose the best method that achieve healing in fast time and with less complications. Methods: the study included 40 kids ,that have been chosen in random way from children that came to the ER and clinics in Alassad and Tishreen university hospitals in time between 2012 and 2017,with age of 9 to 14 years. Results: The results were similar between conservative treatment and surgical treatment via esin according to healing ,time at hospital ,and costs .time to return to daily life is shorter in surgical treatment. complications were found in two methods but there were no effect on the extremity or the child.

Study about Position of Arbitrary Point From a System Consisting of Two Pantograph Mechanisms of Super Elastic Hinges with Fixed Link

In this paper we have a plan mechanical system consists of two pantograph mechanisms, with revolute and sliding joints, linked by fixed link . Then, we replace each revolute joint with super elastic hinge. In this way, we have a system, strongly recommended, to achieve the same goal using minimum of energy.

Study A System Consisting of Four Bar Mechanism and Pantograph Mechanism With One Joint Link

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 same goal using minimum energy. The main goal of this paper is to elaborate a mathematical mechanism able to estimate the deviations of the considered system before and after replacing revolute hinges, taking into account the real performance of the new system through additional large displacements in the flexural hinges.

Improving the performance of an internal Column-beam Composite- Joint in Composite MR Frames

In this research, we discussed an analytical study of the seismic behavior of an internal joint, and we improved the plastic response of the joint after observing the effect of the concrete encasement to the column’s steel section along the connection area.

Studying Two Stephenson mechanism linked by One joints

We study a planar mechanical system generated by two six-bar mechanism with revolute joints, then we link them by revolute joint to become one system . After that we replace each revolute joint with super elastic hinge. The main purpose of this paper is to elaborate a mathematical method able to estimate the deviations of the considered system before and after replacing revolute hinges, taking into account that new system creates large additional deviations .

The integral formulas determinating the stresses and temperature in micropolar elastic body

This paper concerns the mathematical model of Ignaczak kind for the Eringen-Nowacki micropolar elastic body with six material constants, subjected to temperature field, and initially occupying a bounded simply connected region.

study the effect of values of initial void ratio on values of elastic deformation modulus in sand

This search include making laboratory tests on sandy soil samples ,wich were taken from Damascus Suburb (Alkastal-Maarona- Alsallema) and from Hama(Alsalameya), physical and clasificated tests were made besides oedometer tests, two limited cases were studied :maximum loose and maximum dense for each soil. Values of deformation modulus (E) were determined from oedometric compression curves at various compression levels, and then the experimental equations between deformation modulus and primary void ratio, and between modulus of lateral soil pressure and deformation modulus were concluded at maximum loose and maximum dense.

The combination of singular solutions of infinite micropolar elastic body with axisymetric state of elastic strain and subjected to temprrature field

This paper concerns the mathematical, linear model of micropolar elastic, homogeneous and isotropic body, of axisymetric state of small deformations, in the frame of the linear theory of micropolar elasticity with six material constants . In the paper, first we introduce the dynamic displacements-rotation-temperature equations for the considerable body in the axisymetric state of small deformation , subjected to temperature field.

Thermal – Structural Behavior of Steel Beam Under Influence of Temperature

Stability of elements require determination of their dimension, such that the resulting displacement under static or thermal loads are acceptable. Those elements have to resist the applied loads so that the structure or any element does not loss constancy. The most important criteria for stability is represented via element curvature under the influence of load, that load is of any type or in any position. Therefor this paper presents derivation of a theoretical equation to calculate the deflection generated from heating variation between the top and bottom surface of simple steel beam, by means of heating transfer expression.