本文選題：嵌入式薄片模型 + 碳纖維復(fù)合材料��； 參考：《強(qiáng)激光與粒子束》2017年12期

【摘要】：將一等效薄片模型嵌入到時(shí)域有限差分算法(FDTD)中,以快速而有效地解決復(fù)合材料薄片在電磁計(jì)算中的多尺度問(wèn)題。在該嵌入式薄片模型中,薄片不需要被剖分網(wǎng)格,而是被嵌入到相鄰的網(wǎng)格間,從而可以使用相對(duì)較大的網(wǎng)格剖分周圍物體,進(jìn)而可節(jié)省大量的計(jì)算資源。在這一模型中,薄片被等效為一段傳輸線,并用其頻域的導(dǎo)納矩陣代替。使用數(shù)字濾波器理論以及逆Z變換可將頻域的導(dǎo)納矩陣轉(zhuǎn)換到時(shí)域,并將其嵌入到時(shí)域有限差分算法中。該嵌入式薄片模型被用來(lái)計(jì)算一單層碳纖維復(fù)合材料薄片的反射以及透射性能,并與其解析解進(jìn)行對(duì)比,從而驗(yàn)證該模型的準(zhǔn)確性、收斂性以及高效性。該模型被用來(lái)計(jì)算三種具有不同電參數(shù)的單層碳纖維復(fù)合材料薄片的屏蔽性能,以研究各電參數(shù)對(duì)其屏蔽性能的影響。
[Abstract]:An equivalent thin slice model is embedded into FDTD algorithm to solve the multi-scale problem of composite sheet in electromagnetic calculation quickly and effectively. In the embedded thin slice model, the thin slice is embedded between adjacent meshes instead of being subdivided into meshes, so that relatively large meshes can be used to divide the surrounding objects, thus saving a lot of computing resources. In this model, the slice is equivalent to a transmission line and replaced by its admittance matrix in frequency domain. Using digital filter theory and inverse Z transform, the admittance matrix in frequency domain can be converted into time domain and embedded in finite-difference time-domain algorithm. The embedded sheet model is used to calculate the reflection and transmission properties of a single layer carbon fiber composite sheet, and compared with its analytical solution to verify the accuracy, convergence and efficiency of the model. The model is used to calculate the shielding performance of three kinds of carbon fiber laminates with different electrical parameters, and to study the influence of different electrical parameters on the shielding performance.
【作者單位】： 中物院高性能數(shù)值模擬軟件中心;中國(guó)工程物理研究院復(fù)雜電磁環(huán)境重點(diǎn)實(shí)驗(yàn)室;北京衛(wèi)星制造廠;北京應(yīng)用物理與計(jì)算數(shù)學(xué)研究所;
【基金】：國(guó)防基礎(chǔ)科研計(jì)劃項(xiàng)目(C1520110002) 國(guó)家自然科學(xué)基金項(xiàng)目(11405012)
【分類號(hào)】：TB332
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本文編號(hào)：1926219