Study Orientation Ply of Fiberglass on Blade Salt Water Pump Windmill using Abaqus

Windmill is one tool to generate energy from wind energy is converted into energy motion, salt production process still using traditional process by utilizing windmill to move sea water to salt field With a windmill driven water system, a horizontal axis type windmill with an average windmill height of 3-4 m, with a potential wind speed of 5-9 m / s, the amount of blade used for salt water pumps as much as 4 blades, one of the main factor of the windmill component is a blade, blade designed for the needs of a salt water pump by using fiberglass material. On layer orientation 0°,30°,45°,60° and 90° with layer number 10 and layer thickness 2 mm, the purpose of this study was to determine the strength of fiberglass that was influenced by the orientation of the layer, and to determine the orientation of fiberglass layer before making. This method used Finite Element Analysis method using ABAQUS, with homogenous and heterogeneous layer parameters. The simulation result shows the difference in von misses value at an angle of 0°, 30°, 45°,60° homogeneous value is greater than heterogeneous value, whereas in orientation 90 heterogeneous values have value 1,689e9 Pa, greater than homogenous 90 orientation value of 1,296e9 Pa.


Introduction
Windmill is one tool to generate energy from wind energy is converted into energy motion, Indramayu is one of salt producer in west java Indonesia, salt production process still using traditional process by utilizing windmill to move sea water to salt field with a windmill driven water system [1], a horizontal axis type windmill with an average windmill height of 3-4 m, with a potential wind speed of 5-9 m/s [2], the amount of blade used for salt water pumps as much as 4 blades, one of the main factors of the windmill component is a blade, a blade designed for the needs of a salt water pump by using fiberglass material.
Composite materials show different materials with materials in general, composite materials are strong fibers either in the form of continuous or noncontinuous surrounded by weak matrix materials. The matrix serves to distribute the fiber and also transmits the load to the fiber. Composite materials are not new, composite materials have been used since time immemorial. Composites have also been used to optimize the performance of some conventional weapons [3] [4] [5].
The purpose of this study was to determine the strength of fiberglass that was influenced by the orientation of the layer, and to determine the orientation of fiberglass layer before making. This method used Finite Element Analysis method using ABAQUS, with homogenous and heterogeneous layer parameters. In the blade-making process other than the thickness of the blade should be noted the effect 2 1234567890''"" of fiberglass layer orientation on the blade that aims to determine the strength of the blade when exposed to drag and lift force style. In this study, it is necessary to study the effect of fiberglass layer ornament on blade.

Figure 1. Flow Chart Methodology
The method of study in this paper is done by designing the blade first by using Computer Aied Design (CAD), then calculation of load due to wind load, then calculation simulation by loading and load parameters and material, simulation of blade strength calculation of orientation difference, Simulation of static strength of ply orientation is distinguished by homogeneous or heterogeneous type using ABAQUS software.

b. Initial Condition
Blade design that has been made with CAD surface planar type, can be known big blade area to be made, with blade area (A) 130766,64 mm 2 . To find out the magnitude of the force that occurs due to the wind speed and from the blade has a coefficient drag (CD) 2,3 with a wind type of 1,2 kg / m 3 , [5] it is possible to find a large drag force that occurs in the blade;

Figure 3. Initial Condition
In Figure 3 shows the initial condition, (a) shows the load on the blade surface due to the drag wind load, (b) denotes the meshing blade before it is calculated by ABAQUS.

c. Homogenous
In the calculation simulation using ABAQUS software, orientation is made with homogenous, at an angle 0 o , with a maximum loading parameter of 12 kg, the following results are obtained: