Warpage analysis of a Door Carrier Plate in the injection molding Considering the characteristics of LFT

Abstract

자체 tool을 이용하여 mesh의 두께 구현성을 높혔으며, fiber orientation해석을 위하여 ARD-RSC model을 적용하였다.

Approximation of Non-Linear Stress–Strain Curve for GFRP Tensile Specimens by Inverse Method

“…The difference in the engineering S-S curves obtained using the experimental and analysis data was expressed as e q , as shown in Equation (10), and the average of the absolute values of such data was expressed as e q , as shown in Equation (11). The average of the errors generated from all of the properties for each inverse method was expressed as e r , as shown in Equation (12). Figure 7 shows the results of the FEA that was conducted using the estimation equations.…”

“…However, polymer plastics exhibit lower strength compared with metal materials [9,10]. To this end, many studies have been conducted to improve the strength of plastics by adding glass or carbon fibers [11,12]. The plastics with such fibers vary the pattern of the stress-strain (S-S) curve, a macroscopic property, and also make it difficult to predict microscopic mechanical properties [13,14].…”

“…Recently, studies on models for estimating the S-S curve using the response surface method of design of experiment (DOE), which are referred to as inverse methods, have been conducted [16][17][18]. For inverse methods, basic theories are provided by the American Society for Testing and Materials (ASTM) standards; further, studies to improve the accuracy of property data through mathematical modeling that uses power and exponential functions have been proposed [12][13][14][15][16][17][18][19][20][21][22]. However, as mathematical models may vary depending on the materials, inverse methods have been mostly applied to metals and alloy models.…”