CAJ | 학술논문

研究了耦合非线性能量阱的非保守系统的定向能量传递现象。基于复变量平均法推导含有阻尼参数的系统慢变方程，求解出系统能量与各参数近似关系，获得了系统能够实现定向能量传递时阻尼必须满足的条件，并给出了非线性能量阱具有吸振能力时线性振子阻尼有效范围，最后数值分析验证上述研究结果。
연구료우합비선성능량정적비보수계통적정향능량전체현상。기우복변량평균법추도함유조니삼수적계통만변방정，구해출계통능량여각삼수근사관계，획득료계통능구실현정향능량전체시조니필수만족적조건，병급출료비선성능량정구유흡진능력시선성진자조니유효범위，최후수치분석험증상술연구결과。
Here,targeted energy transfer was investigated in a non-conservative system with nonlinear energy sinks.Firstly,the system slowly-varying equation containing damping parameters was derived based on the complex-averaging method.Then,the approximate relationships between the system energy and parameters were solved,the necessary conditions satisifed by damping to realize system's targeted energy transfer were achieved.The effective range of a linear oscillator's damping during nonlinear energy sinks having the capacity of vibration suppression was gained.At last,the above study results were verified with numerical simulations.