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\beta_{\layer} |\bm{\tau}_S| + \chi_{\layer} \sigma_H \label{eq:frequency_shift} \end{equation} ÆäÖÐË¥¼õ¹æÂÉΪ£º \begin{equation} \alpha_{\layer} = \alpha_1 \cdot q^{\layer-1}, \quad \beta_{\layer} = \beta_1 \cdot r^{\layer-1}, \quad \chi_{\layer} = \chi_1 \cdot s^{\layer-1} \label{eq:decay_law} \end{equation} $q,r,s \in (0,1)$Ϊ²ÄÁÏÒÀÀµÐÔË¥¼õÒò×Ó£¬Ðèͨ¹ýÌØ¶¨ÊÔÑé±ê¶¨¡£ \subsection{¶àÖáÔØºÉϵĽçÃæÑÝ»¯·½³Ì} ½çÃæ²ãÎ»ÒÆ³¡$\mathbf{u}_{\layer}$Âú×㺬¹ãÒåÁ¦µÄ¶¯Á¦Ñ§·½³Ì£º \begin{equation} m_{\layer} \frac{\partial^2 \mathbf{u}_{\layer}}{\partial t^2} + m_{\layer} \nu_{\layer}^2 \mathbf{u}_{\layer} + \eta_{\layer} |\mathbf{u}_{\layer}|^2 \mathbf{u}_{\layer} + \sum_{\layer' \neq \layer} \Kmat_{\layer\layer'} (\mathbf{u}_{\layer} - \mathbf{u}_{\layer'}) = \mathbf{F}_{\layer}(\stress) \label{eq:interface_dynamics} \end{equation} ʽÖÐ$\Kmat_{\layer\layer'}$Ϊ²ã¼äñîºÏÕÅÁ¿£¬±¾ÎÄÊ״ν«Æä¹¹ÔìΪ¸÷ÏòÒìÐÔÐÎʽ£º \begin{equation} \Kmat_{\layer\layer'} = \kappa_0 \cdot p^{|\layer-\layer'|} \left( \mathbf{I} + \mu \, \mathbf{n} \otimes \mathbf{n} \right) \label{eq:coupling_tensor} \end{equation} ÆäÖÐ$\mathbf{I}$Ϊµ¥Î»ÕÅÁ¿£¬$\mu$Ϊ·¨ÏòÔöǿϵÊý£¬$p$Ϊ²ã¼äË¥¼õÒò×Ó¡£Çý¶¯Á¦$\mathbf{F}_{\layer}(\stress)$Òà·Ö½âΪ·¨ÏòÓëÇÐÏò¹±Ï×£º \begin{equation} \mathbf{F}_{\layer}(\stress) = f_{\layer}^{(N)} \sigma_N \mathbf{n} + f_{\layer}^{(S)} \bm{\tau}_S \label{eq:driving_force} \end{equation} ¸Ã·½³ÌÊ×´ÎÏÔʽµØÒýÈëÁËÇÐÏòÓ¦Á¦¶Ô½çÃæÎ»ÒÆ³¡µÄÖ±½Ó¼¤·¢£¬´Ó¶øÄܹ»ÃèÊöŤת»ò¼ôÇÐÔØºÉ¶ÔSCC¹ý³ÌµÄÓ°Ïì¡£ \subsection{µç»¯Ñ§²ÎÊýµÄÔλ·´ÑݹØÏµ} »ùÓÚ½çÃæ½á¹¹±ä»¯Óëµç»¯Ñ§ÏìÓ¦Ö®¼äµÄÄÚÔÚ¹ØÁª£¬±¾ÎÄÊ×´ÎÌá³öÒÔÏ·´Ñݹ«Ê½£¬¿ÉÀûÓÿɲâÁ¿µÄ¸ßƵ×迹Æ×»òÉù·¢ÉäÐźżä½ÓÍÆËãÁÑÎÆ¼â¶ËµÄÑô¼«Æ½ºâµçλ$\pot_{\text{eq}}$¼°Òõ¼«½»»»µçÁ÷ÃܶÈ$\exch$£º \begin{align} \pot_{\text{eq}}(t) &= \pot_{\text{eq}}^0 + \xi \sum_{\layer=1}^{N} \frac{\partial \Gamma}{\partial \nu_{\layer}} \frac{d\nu_{\layer}}{dt} \label{eq:pot_inversion} \\ \ln \exch(t) &= \ln \exch^0 + \zeta \sum_{\layer=1}^{N} \frac{\partial^2 \Gamma}{\partial \nu_{\layer}^2} \left( \frac{d\nu_{\layer}}{dt} \right)^2 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