CAJ | 학술논문

基于土壤液化原理的荸荠采收船是集挖掘、清洗、装箱于一体的荸荠采收设备，可大大提高荸荠的采收效率，其核心结构是挖掘器。挖掘器的挖掘齿和振松齿周期分布在筒体上，即挖掘器是周期对称结构。但因各种因素，实际上的挖掘器并不是理想化的周期对称结构，而是存在小量失谐的类周期结构，即失谐周期结构，失谐使结构出现模态局部化现象。为此，分别建立了质量失调和刚度失调有限元模型，用 ANSYS Workbench 分别研究了质量失调和刚度失调对挖掘器振动特性的影响。结果表明：挖掘器微小的失调量会产生模态局部现象，且对各阶模态影响程度不同。
기우토양액화원리적발제채수선시집알굴、청세、장상우일체적발제채수설비，가대대제고발제적채수효솔，기핵심결구시알굴기。알굴기적알굴치화진송치주기분포재통체상，즉알굴기시주기대칭결구。단인각충인소，실제상적알굴기병불시이상화적주기대칭결구，이시존재소량실해적류주기결구，즉실해주기결구，실해사결구출현모태국부화현상。위차，분별건립료질량실조화강도실조유한원모형，용 ANSYS Workbench 분별연구료질량실조화강도실조대알굴기진동특성적영향。결과표명：알굴기미소적실조량회산생모태국부현상，차대각계모태영향정도불동。
The water chestnut harvesting ship is a kind of chestnut harvesting device which can dig , clean, pack and im-prove the water chestnut harvesting efficiency .Its core structure is the digging device .The digging tooth and vibrating tooth of digging device period distribute on the barrel namely a periodic symmetrical structures .Due to various factors , the virtual digging device is not an ideal periodically symmetrical structures , but a quasi-periodic structure that has a small disorder namely a periodic structure , which can cause localization of vibration modes .The influence of stiffness dis-order and quality disorder on vibration characteristics via ANSYS workbench .The result shows that a small disorder of the digging device can cause mode localization , and has different influences on different modes .