Micro-, meso-to macroscopic modeling of deformation behavior of semi-crystalline polymer

M Uchida, N Tada - International Journal of Plasticity, 2013 - Elsevier
To represent the elasto-viscoplastic deformation behavior of semi-crystalline polymer (SCP),
which has a complicated hierarchical structure, a micro-, meso-to macroscopic …

Sequential evaluation of continuous deformation field of semi-crystalline polymers during tensile deformation accompanied by neck propagation

M Uchida, N Tada - International Journal of Plasticity, 2011 - Elsevier
The localized deformation field of high density polyethylene and polypropylene during a
tensile test accompanied by neck propagation was quantitatively evaluated based on the …

Estimation of the True Crystallite Modulus of Silk Fibers from the Relation between the X-ray-Analyzed Apparent Crystallite Modulus and Heterogeneous Stress …

S Kummara, T Yoshioka, K Tashiro - Macromolecules, 2024 - ACS Publications
To understand the mechanical property of silkworm silk fibers, it is indispensable to know the
so-called crystallite modulus or the ultimate Young's modulus of the crystalline phase along …

Finite element simulation of deformation behavior of semi-crystalline polymers with multi-spherulitic mesostructure

M Uchida, T Tokuda, N Tada - International journal of mechanical sciences, 2010 - Elsevier
Elasto-viscoplastic deformation behavior of semi-crystalline polymer with multi-spherulitic
mesostructure was investigated using large deformation finite element homogenization …

[PDF][PDF] Time-dependent J-integral solution for semi-elliptical surface crack in HDPE

M Bendouba, A Djebli, A Aid… - … Comput. Mater. Con, 2015 - cdn.techscience.cn
This work focuses on a linear elastic analysis by the finite element method and the
development of a shape function, commonly known as geometrical correction factor, for the …

[PDF][PDF] Polymer spherulite growth simulation during crystallization by phase-field method

M Asanishi, T Takaki, Y Tomita - Proceedings of AES–ATEMA'2007 …, 2007 - Citeseer
The establishment of a coupled numerical model that enables us to simulate spherulite
formations and their mechanical behavior continuously for crystalline polymers is our …

積層複合体モデルに基づく結晶性高分子材料のミクロ・メゾスケールの変形挙動のモデル化

内田真, 多田直哉, 冨田佳宏 - 日本機械学会論文集 A 編, 2011 - jstage.jst.go.jp
抄録 Since semi-crystalline polymer has very complex hierarchical structure, it is essential to
construct a suitable multiscale mechanical model for the prediction of its mechanical …

Phase-field simulation during spherulite formation of polymer

T Takaki, M Asanishi, A Yamanaka… - Key Engineering …, 2007 - Trans Tech Publ
The establishment of the coupled numerical model which enable to simulate the spherulite
formation and its mechanical behavior continuously is our final goal. In this paper, we have …

結晶性高分子材料の塑性変形に関するマルチスケールシミュレーション

内田真 - 成形加工, 2017 - jstage.jst.go.jp
するための基礎理論を紹介する. まず, 結晶相における分子鎖の構造, 並びにその塑性変形を記述
するための構成式について述べる. 図 2 は, ポリエチレンの単結晶の概念図を示している …

分子鎖網目理論による高分子材の変形応答のモデル化とシミュレーション 3. 結晶性ポリマーの評価と組織形成予測およびミクロメカニカルシミュレーション

冨田佳宏 - 材料, 2013 - jstage.jst.go.jp
に示すような b 軸を法線とする断面では, 分子鎖方向と界面法線には角度差が存在する.
結晶および非晶相は図 1 (b) のような積層構造を呈しており, 結晶相の厚さはおよそ 5~ 25nm …