Analisis Kekuatan Struktur Wereable Elbow Exoskeleton untuk Penderita Kelumpuhan Gerak Siku Menggunakan Finite Element Method (FEM)

Abstract

The development of wearable elbow exoskeletons is in line with the development of robotics, where for some purposes to be used requires adjustments to material use. In the development of robotics, the types of robots are divided into 2 types, namely hard robotic and soft robotic based on the material used. On robotic wearable exoskeletons also adapting material developments that can support ergonomic values for patients to use it more comfortably. In Indonesia, research on elbow exoskeletons has been carried out (Ismail, 2018), but it is necessary to test the structural strength of these therapeutic devices. In this study we will discuss the strength of the structure of the Wearable Elbow Exoskeleton that has been designed using the Finite Element Method where objects consist of an infinite number of elements that compose them. In the absence of the finite element method it will be very difficult to analyze the stress or deformation. To facilitate the analysis it can be assumed that an object consists of a finite number of elements. The finite element method is a method that approaches by assuming an object consists of finite elements. These elements are considered separate and are connected to a point called a nodal point so that it forms a net, the smaller the size of the element, the smaller the error that arises. The simulation process is given some limitations that are used in the simulation. In boundary condition, we determine the loads that work on the geometry and what supports are used in geometry. The boundary condition specified in the simulation must be as much as possible with the actual conditions, because it will affect the results that will be obtained in the simulation process. From the simulation results obtained in the motor-linkage section the maximum voltage is 0.0016 MPa and safety factor of 13.05, the maximum linkage received is 58.461 MPa and the safety factor is 3.561, while the base maximum voltage received is 7.624 MPa and the safety factor amounting to 3,542. From these results it can be concluded if the parts that are considered prone to failure are considered to have sufficient safety factors to be used even at the maximum stress Keywords: Finite element method; von mises; brachialis plexus injury ABSTRAK

Analisa Penggunaan Support Frame Lama Pada Desain Baru Screw Conveyor Machine Menggunakan Metode Elemen Hingga

“…Pada simulasi support farme diberikan batasan, besar dan letak beban yang bekerja pada geometri dan tumpuan yang digunakan pada geometri. Boundary condition pada simulasi harus sebisa mungkin mendekati kondisi yang sebenarnya, karena akan mempengaruhi hasil simulasi yang diperoleh [13]. Pengumpulan data beban dilakukan menggunakan mass properties yang terdapat pada software solidworks guna mengetahui beban yang akan di topang oleh Support frame.…”