CAJ | 학술논문

多孔材料的宏观力学性能同时受到构成材料的力学特性和细观孔洞构造特征的影响。在前人对多孔材料力学性能和等效弹性模量研究的基础上，文中着重对多孔材料等效刚度的影响因素和微铣削加工过程稳定性展开分析研究。研究结果表明：多孔材料的刚度与构成材料单元胞的胞壁长度及厚度密切相关，等效刚度随胞壁厚度增加而增大、随胞壁长度的增大而减小；材料刚度直接影响微铣削加工稳定性，刚度大稳定铣削区域变大。此外加工稳定性还受固有频率、阻尼率等因素的影响。该研究为进一步分析多孔材料微铣削加工稳定性提供了理论依据。
다공재료적굉관역학성능동시수도구성재료적역학특성화세관공동구조특정적영향。재전인대다공재료역학성능화등효탄성모량연구적기출상，문중착중대다공재료등효강도적영향인소화미선삭가공과정은정성전개분석연구。연구결과표명：다공재료적강도여구성재료단원포적포벽장도급후도밀절상관，등효강도수포벽후도증가이증대、수포벽장도적증대이감소；재료강도직접영향미선삭가공은정성，강도대은정선삭구역변대。차외가공은정성환수고유빈솔、조니솔등인소적영향。해연구위진일보분석다공재료미선삭가공은정성제공료이론의거。
The macro-mechanical properties of porous materials are simultaneously affected by the properties of constituents and the hole structure.Based on the previous researchs on macro-mechanical properties and the e-quivalent elastic modulus of porous materials, this paper has focused on the influence factors of equivalent stiff-ness and the micro-milling stability of porous materials.Study shows that the stiffness is closely interrelated to the length and thickness of unit cell wall of porous materials.Stiffness will improve while the thickness increases and length decreases.Stiffness of materials directly affects the micro-milling stability lobes diagram.The stable region will grow if the stiffness increases.In addition,the stable region is also affected by factors such as natural fre-quency, damping ratio and so on.This study provides a theoretical basis for further analysis on micro-milling sta-bility of porous materials.