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1. KR1020060091633 - METHOD FOR PERFORMING DYNAMICALLY SIMULATION AND SOLVING TRANSIENT SOLUTION IN FILM BLOWING PROCESS WITH NEWTON METHOD AND OCFE

Office
Republic of Korea
Application Number 1020050012890
Application Date 16.02.2005
Publication Number 1020060091633
Publication Date 21.08.2006
Grant Number 1007013030000
Grant Date 29.03.2007
Publication Kind B1
IPC
G06F 17/10
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
17Digital computing or data processing equipment or methods, specially adapted for specific functions
10Complex mathematical operations
Applicants KOREA UNIVERSITY INDUSTRY AND ACADEMY COOPERATION FOUNDATION
고려대학교 산학협력단
Inventors HYUN, JAE CHUN
현재천
JUNG, HYUN WOOK
정현욱
SONG, HYUN SEOB
송현섭
KIM, HYUN CHUL
김현철
LEE, JOO SUNG
이주성
SHIN, DONG MYEONG
신동명
Agents 이덕록
Title
(EN) METHOD FOR PERFORMING DYNAMICALLY SIMULATION AND SOLVING TRANSIENT SOLUTION IN FILM BLOWING PROCESS WITH NEWTON METHOD AND OCFE
(KO) 휠름 블로잉 공정의 동적 모사와 과도해 계산 도출 방법
Abstract
(EN)

PURPOSE: A method for performing dynamically simulation and solving a transient solution in a film blowing process is provided to effectively simulate an actual process by inducing a dominant equation, changing a free-end-point problem into a fixed-end-point problem through coordinate conversion, and calculating the transient solution through a Newton method and an OCFE(Orthogonal Collocation on Finite Elements) method.

CONSTITUTION: The dominant equation considering viscoelasticity and cooling property of a film is induced, and the free-end-point problem of distance-time is changed into the fixed-end-point problem of temperature-distance through coordinate conversion. The transient solution of a film blowing processing model is calculated by applying the Newton method and the OCFE method.

© KIPO 2006


(KO) 본 발명은 휠름 블로잉 공정(film blowing process)의 동적 모사와 과도해 계산 도출 방법에 관한 것으로 휠름의 점탄성 특성과 냉각 특성을 고려한 지배방정식을 유도하고, 좌표변환을 통해 거리-시간의 좌표를 온도-시간의 좌표로 바꾸어 준 다음, 공지의 뉴튼 방법(Newton's method)과 OCFE(Orthogonal Collocation on Finite Elements) 방법으로 과도해를 계산 도출하여 공정의 모사와 연신공명(draw resonance)을 포함한 불안정성(instabilities)들의 분석을 통해서 공정의 최적화(optimization)와 안정화(stabilization)에 필요한 장치개발, 공정의 최적 조건과 운전방법 개발, 고분자 원료의 개발 등에 이용할 수 있는 뛰어난 효과가 있다.
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