A Robust Solution Procedure for Hyperelastic Solids with Large Boundary Deformation

Compressible Mooney-Rivlin theory has been used to model hyperelastic solids, such as rubber and porous polymers, and more recently for the modeling of soft tissues for biomedical tissues, undergoing large elastic deformations. We propose a solution procedure for Lagrangian finite element discretization of a static nonlinear compressible Mooney-Rivlin hyperelastic solid. We consider the case in which the boundary condition is a large prescribed deformation, so that mesh tangling becomes an obstacle for straightforward algorithms. Our solution procedure involves a largely geometric procedure to untangle the mesh: solution of a sequence of linear systems to obtain initial guesses for interior nodal positions for which no element is inverted. After the mesh is untangled, we take Newton iterations to converge to a mechanical equilibrium. The Newton iterations are safeguarded by a line search similar to one used in optimization. Our computational results indicate that the algorithm is up to 70 times faster than a straightforward Newton continuation procedure and is also more robust (i.e., able to tolerate much larger deformations). For a few extremely large deformations, the deformed mesh could only be computed through the use of an expensive Newton continuation method while using a tight convergence tolerance and taking very small steps.Comment: Revision of earlier version of paper. Submitted for publication in Engineering with Computers on 9 September 2010. Accepted for publication on 20 May 2011. Published online 11 June 2011. The final publication is available at http://www.springerlink.co

A comparative study of high-field diamagnetic fluctuations in deoxygenated YBa2Cu3O(7-x) and polycrystalline (Bi-Pb)2Sr2Ca3O(10)

We studied three single crystals of YBa2Cu3O{7-x} with Tc= 62.5, 52, and 41 K, and a textured specimen of (Bi-Pb)2Sr2Ca2Cu3O10 with Tc=108 K, for H//c axis. The reversible data were interpreted in terms of 2D lowest-Landau-level fluctuation theory. The data were fit well by the 2D LLL expression for magnetization obtained by Tesanovic etal., producing reasonable values of kappa but larger values of dHc2/dT. Universality was studied by obtaining a simultaneous scaling of Y123 data and Bi2223. An expression for the 2D x-axis LLL scaling factor used to obtain the simultaneous scaling was extracted from theory, and compared with the experimental values. The comparison between the values of the x-axis produced a deviation of 40% which suggests that the hypothesis of universality of the 2D-LLL fluctuations is not supported by the studied samples. We finaly observe that Y123 magnetization data for temperatures above $T_c$ obbey a universal scaling obtained for the diamagnetic fluctuation magnetization from a theory considering non-local field effects. The same scaling was not obbeyed by the corresponding magnetization calculated from the two-dimensional lowest-Landau-level theory.Comment: 7 pages 5 figures, accept in Journ. Low Temp. Phy

Experimental observation of high field diamagnetic fluctuations in Niobium

We have performed a magnetic study of a bulk metallic sample of Nb with critical temperature $T_{c}=8.5$ K. Magnetization versus temperature (M {\it vs} T) data obtained for fixed magnetic fields above 1 kOe show a superconducting transition which becomes broader as the field is increased. The data are interpreted in terms of the diamagnetic lowest Landau level (LLL) fluctuation theory. The scaling analysis gives values of the superconducting transition temperature $T_{c}(H)$ consistent with $H_{c2}(T)$% . We search for universal 3D LLL behavior by comparing scaling results for Nb and YBaCuO, but obtain no evidence for universality.Comment: 5 pages, 6 figures, Accepted for publication in Phys.Rev.

Analisis Penulisan Resensi Artikel Siswa Kelas XII IPA 2 Sman 9 Pontianak Tahun Pelajaran 2015/2016

Penelitian ini bertujuan mendeskripsikan penulisan resensi pada siswa kelas XII IPA 2 SMA Negeri 9 Pontianak tahun pelajaran 2015/2016. Metode yang digunakan adalah deskriptif dengan bentuk penelitian kualitatif. Sumber datanya adalah siswa kelas XII IPA 2 SMAN 9 Pontianak tahun pelajaran 2015/2016 yang berjumlah 25 siswa. Datanya adalah semua kata, frasa, dan kalimat yang terdapat dalam penulisan resensi siswa kelas XII IPA 2 SMAN 9 Pontianak tahun pelajaran 2015/2016. Hasil analisis (1) penggunaan sitematika resensi tergolong kurang baik dengan persentase 49%; (2) penulisan isi artikel tergolong kurang baik dengan persentase 57,6%; hasil belajar siswa menulis resensi tidak mencapai ketuntasan. (3) penggunaan ejaan yang disempurnakan tergolong sangat baik dengan persentase 89,68%; (4) penggunaan diksi tergolong sangat baik dengan persentase 91,45%; dan (5) penggunaan kalimat efektif tergolong cukup baik dengan persentase 70,24%. Kata kunci: analisis, penulisan, resensi, artikel Abstrack: This research aims to describe process of writing book review in SMA Negeri 9 Pontianak, class XII IPA 2, academic year 2015/2016. The method used in this research is descriptive method with a form of qualitative research. The data in this words, phrases, and sentences contained in the process of writing book review in SMA Negeri 9 Pontianak, class XII IPA 2, academic year 2015/2016. The result the analysis process of writing book review (1) The use of systematic in writing book review is categorized as not really good, with the precentage 47 %, (2) The writing article which was being reviewcd is categorized as good enogh, with the precentage 57,6%, the result of students' writing in reviewing book is not reach the standard score, (3) The use of Indonesian right spelling is categorized as very good, with the precentage 89,68%, (4) The use of diction is categorized as very good, with the precentage 91,45%, and (5) The effective sentences' USAge is categorized as good enough, with the precentage 70,24%

Numeralia Bahasa Melayu Dialek Kapuas Hulu

: This study aims to examine and analyze numeralia Malay language used in the village Nibung Selimbau District of Kapuas Hulu. Aspects studied and analyzed from the numerali is the form, function and meaning numeralia Malay. The method used in this research is descriptive qualitative research methods. Data collection techniques used are fishing techniques and techniques semuka face. From the data obtained it can be concluded form BMDKH numeralia consists of numeralia monomorfemis and polimorfemis. BMDKH numeralia function in units of syntax can fill some syntactic function, among others, the subjective function, serves predicate, object function, and function information. Numeralia meaning BMDKH consists of a prefix meaning numeralia to-stated meaning or collective collection and express the meaning of the order, meaning numeralia with all prefixes declared collective or group, with a prefix meaning BE- numeralia states collectively or collection

Analisis Campur Kode Dalam Novel Ibuk Karya Iwan Setyawan

: This study aims to determine the form, function and factors that cause interference in the novel Ibuk code works Iwan Setyawan. The method used is descriptive method. The results of the analysis of data obtained codes are a form of intervention in the form of a form of words, phrases, clauses, words repeated, idioms and baster. Interference function in the novel Ibuk code is as looping, implied sentence, as opposed to speech function specification, and classify the contents of the message element. Factors causing interference in the work of Iwan Setyawan Ibuk novel because: talk about a particular topic, reinforce something, fillers and connective sentence, looping to clarify, intends to clarify the content of the conversation to the other person, the identity of a group, refine or clarify the request or command, needs lexical and keefesiensian a conversation. Form of interference is dominated by a form of code words, the function is a function that dominates opponents said specifications and the dominating factor is the factor of lexical needs. words, the function is a function that dominates opponents said specifications and the dominating factor is the factor of lexical needs