A Flexure-Based Mechanism for Precision Adjustment of National Ignition Facility Target Shrouds in Three Rotational Degrees of Freedom

被引：7

作者：

Boehm, K. -J. ^{[1
]}

Gibson, C. R. ^{[1
]}

Hollaway, J. R. ^{[2
]}

Espinosa-Loza, F. ^{[2
]}

机构：

[1] Gen Atom, POB 85608, San Diego, CA 92186 USA

[2] Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94550 USA

来源：

FUSION SCIENCE AND TECHNOLOGY | 2016年 / 70卷 / 02期

关键词：

Target shrouds; flexure; precision alignment;

D O I：

10.13182/FST15-217

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

This paper presents the design of a flexure-based mount allowing adjustment in three rotational degrees of freedom (DOFs) through high precision set-screw actuators. The requirements of the application called for small but controlled angular adjustments for mounting a cantilevered beam. The proposed design is based on an array of parallel beams to provide sufficiently high stiffness in the translational directions while allowing angular adjustment through the actuators. A simplified physical model in combination with standard beam theory was applied to estimate the deflection profile and maximum stresses in the beams. A finite element model was built to calculate the stresses and beam profiles for scenarios in which the flexure is simultaneously actuated in more than one DOF.

引用

页码：265 / 273

页数：9

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