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Case Studies and Links to Academic Papers LUSAS Academic is used by universities, research institutes and teaching colleges worldwide for all types of finite element analysis. These case studies provide a number of illustrative uses of the software with the most recently added article at the top. • Mehrdad Bisadi, a PhD researcher at the University of Auckland, is using LUSAS to investigate the accuracy and reliability of the impact factors used to design and assess New Zealand rail bridges. The objective has been to fine-tune a LUSAS Bridge model prior to carrying out numerical modelling of the dynamic response of the viaduct for different train dynamic characteristics. A weigh-in-motion system measured the train characteristics during field monitoring.

The measured data was then used to define the train configurations in the LUSAS software. Interactive Modal Dynamics analysis with LUSAS computed the dynamic response of the viaduct during train crossings. A comparison between the measured and simulated results showed that the LUSAS model accurately predicts observed displacements. (414k) • The analytical power and design flexibility offered by the Finite Element Method (FEM) can be all too readily masked from the first time user by its apparent complexity. The steep learning curve can appear daunting when the method is first encountered, and FEM needs to be sensitively introduced, with carefully graded examples if students are not to be put off the subject completely. In this paper the author describes a strategy which he believes enables students to experience for themselves how beneficial FEM can be, whilst at the same time, warns them of the pitfalls and potential dangers.

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(423k) • A combination of simple fabrication techniques and speedy site erection have made bolted endplates one of the most popular methods of connecting members in structural steelwork frames. Although simple in their use, bolted endplates are extremely complex in their analysis and behaviour. This paper reports on a Steel Construction Institute funded PhD research program which uses a combination of full scale testing and materially non-linear three dimensional finite element analyses (FEA) in order to investigate extended end plate beam-to-column connections. See also the LUSAS Civil & Structural case study (515k) • Due to high stiffness and strength to weight ratios, composite sandwich is used increasingly in aerospace applications. Reestri aktov skritih rabot obrazec. The main drawback of sandwich structure is its low resistance to impact damage and the extent to which the strength of the structure is reduced under compressive loading.

Contoh Kop Surat. Ada berbagai contoh kop surat yang biasa kita temukan, mulai dari kop surat perusahaan, kop surat sekolah, kop surat yayasan, kop surat intstansi pemerintahan, sampai dengan kop surat lembaga dan organisasi. Contoh kop surat resmi perusahaan. Karena dengan adanya kop surat, maka surat tersebut terkesan lebih professional, terbukti bahwa surat tersebut surat resmi, dan sekaligus menunjukkan citra perusahaan yang mengirimnya. Sangat berbeda dengan surat pribadi yang terkesan begitu bebas. Kop surat resmi adalah sebuah dari surat yang mana letaknya atau ditulis dibagian atas dalam sebuah surat yang ditulis oleh sebuah perusahaan ataupun instansi resmi. Dalam setiap surat resmi pastinya akan menggunakan kop surat. Contoh Kop Surat – Kop surat adalah bagian terpenting dari setiap surat resmi yang dikeluarkan oleh pemerintah, mulai dari pusat hingga tingkat RT, ataupun perusahaan, mulai dari yang berskala internasional hingga lokal. Contoh Kop Surat Perusahaan – Dalam menjalankan usaha ataupun bisnis, setiap perusahaan tentu akan menggunakan surat resmi sebagai media komunikasi mereka. Surat resmi perusahaan tersebut digunakan untuk keperluan komunikasi internal perusahaan maupun komunikasi eksternal.