کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
804417 1467843 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Lattice flexures: Geometries for stiffness reduction of blade flexures
ترجمه فارسی عنوان
خمیدگی شبکه: هندسه برای کاهش سختی خم شدن تیغه
کلمات کلیدی
سازگار، انعطاف پذیری، خمشی شبکه محور خمشی متقاطع محور، سختی خارج از محور
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی


• We present geometry designed to reduce the bending stiffness of blade flexures.
• We derive the bending stiffness of these flexures analytically.
• We confirm the analytic model using numerical techniques and by experiment.
• We show that lattice flexures exhibit improved off-axis stiffness when compared to blade flexures.
• We show that lattice flexures can be a direct replacement for blade flexures.

Reducing the motion-direction stiffness of compliant mechanisms reduces their actuation effort and simplifies associated static balancing mechanisms. This work introduces a flexure type called lattice flexures and evaluates some of their fundamental properties. Lattice flexures have a reduced bending stiffness when compared to traditional rectangular-section blade flexures of similar size. The motion-direction bending stiffness of two lattice flexure types, called X-type and V-type, are analytically derived, corroborated with finite element analysis, and validated with measurements of physical prototypes. The lattice flexure has the potential to reduce the bending stiffness of some compliant mechanisms by 60–80%, as demonstrated in devices manufactured using 3D printing technologies. It is shown that some lattice flexures exhibit a torsional/bending stiffness ratio as much as 1.7 times higher than an equal aspect-ratio blade flexure, and a transverse bending/motion-direction bending stiffness ratio up to 6.5 times higher than an equal aspect-ratio blade flexure.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Precision Engineering - Volume 45, July 2016, Pages 160–167
نویسندگان
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