PERUBAHAN AKAD PADA PT. BANK NTB PASCA KONVERSI MENJADI PT. BANK NTB SYARIAH SESUAI PERDA NO 8 TAHUN 2018

PT. Bank NTB akhirnya melakukan konversi menjadi PT. Bank NTB Syariah setelah sebelumnya PT. Bank Aceh Syariah telah melakukan konversi menjadi bank syariah pada Agustus 2016 lalu. Konversi Bank NTB telah direncanakan oleh Gubernur NTB dari Tahun 2014, dan akhirnya baru direalisasikan pada 13 September 2018 setelah dikeluarkannya Peraturan Daerah (Perda) Nomor 8 Tahun 2018 tentang Konversi Bank NTB menjadi Bank NTB Syariah. Dengan dikeluarkan Perda tadi Bank NTB resmi menjadi Bank Umum Syariah. Jenis penelitian ini adalah penelitian lapangan dengan pendekatan yuridis normatif. Sedangkan untuk metode analisis data yang digunakan adalah deskriptif normatif. Dan dalam metode pengumpulan data penulis menggunakan metode observasi, wawancara, dan dokumentasi Produk perbankan yang telah digunakan sebelumnya oleh pihak nasabah akan tetap berlaku setelah dilakukannya konversi ke bank syariah tetapi diikuti dengan perubahan akad yang digunakan dalam perbankan syariah itu sendiri sesuai kesepakatan bank dengan nasabah yang ditanda tangani.Penduduk Nusa Tenggara Barat mayoritas muslim, sehingga kebutuhan akan jasa- jasa perbankan syariah menjadi hal tepat, hal ini sejalan dengan tujuan pembangunan nasional Indonesia untuk mencapai terciptanya masyarakat adil dan makmur berdasarkan demokrasi ekonomi, Untuk itu praktik konversi PT Bank NTB menjadi PT Bank NTB Syariah terdapat maslahah yang lebih basar dari pada mudharatnya sehingga sesuai dengan tujuan Hukum Islam dan praktik ini dibenarkan dalam Islam

A single point of pressure approach as input for injury models with respect to complex blast loading conditions

Blast injury models, like Axelsson and Stuhmiller, require four pressure signals as input. Those pressure signals must be acquired by a Blast Test Device (BTD) that has four pressure transducers placed in a horizontal plane at intervals of 90 degrees. This can be either in a physical test setup or in a numerical environment. However, using a BTD for blast injury assessment can be very cost-inefficient since this procedure only predicts injury at one specific location. For injury predictions at other positions a new simulation or experiment must be performed. Several single point approaches remove the need for a BTD by using the free field pressure as model input. However, it is not clear whether these will give correct results. To assess the applicability of these methods, case studies of different single point approaches have been performed for different charge weights, ranging from 9 to 5000 kg. Distances from the charges corresponded to free field lung injury threshold levels and 50% survivability levels. Results from the full BTD approach were compared with the single point methods. In particular, the influence of reflecting surfaces was studied

On the study of ricochet and penetration in sand, water and gelatin by spheres, 7.62 mm APM2, and 25 mm projectiles

AbstractWe examine the ricochet and penetration behavior in sand, water and gelatin by steel spheres, 7.62 mm APM2 and 25 mm projectiles. A threshold impact angle (critical angle) exists beyond which ricochet cannot occur. The Autodyn simulation code with the smooth particle hydrodynamic (SPH) method and Impetus Afea Solver with the corpuscular model are used and the results are compared with experimental and analytical results. The resistance force in sand for spheres was proportional to a term quadratic in velocity plus a term linear in velocity. The drag coefficient for the quadratic term was 0.65. The Autodyn and Impetus Afea codes simulate too large penetration due to the lack of a linear velocity resistance force. Critical ricochet angles were consistent with analytical results in the literature. In ballistic gelatin at velocities of 50–850 m/s a drag coefficient of 0.30 fits the high speed camera recordings if a linear velocity resistance term is included. However, only a quadratic velocity resistance force with drag coefficient that varies with the Reynolds number also fits the measurements. The simulation of a sphere in water with Autodyn showed too large drag coefficient. The 7.62 mm APM2 core simulations in sand fit reasonable well for both codes. The 25 mm projectile ricochet simulations in sand show consistency with the high speed camera recordings. Computer time was reduced by one to two orders of magnitudes when applying the Impetus Afea Solver compared to Autodyn code due to the use of the graphics processing units (GPU)

Experimental and numerical study of the fragmentation of expanding warhead casings by using different numerical codes and solution techniques

AbstractThere has been increasing interest in numerical simulations of fragmentation of expanding warheads in 3D. Accordingly there is a pressure on developers of leading commercial codes, such as LS-DYNA, AUTODYN and IMPETUS Afea, to implement the reliable fracture models and the efficient solution techniques. The applicability of the Johnson–Cook strength and fracture model is evaluated by comparing the fracture behaviour of an expanding steel casing of a warhead with experiments. The numerical codes and different numerical solution techniques, such as Eulerian, Lagrangian, Smooth particle hydrodynamics (SPH), and the corpuscular models recently implemented in IMPETUS Afea are compared. For the same solution techniques and material models we find that the codes give similar results. The SPH technique and the corpuscular technique are superior to the Eulerian technique and the Lagrangian technique (with erosion) when it is applied to materials that have fluid like behaviour such as the explosive and the tracer. The Eulerian technique gives much larger calculation time and both the Lagrangian and Eulerian techniques seem to give less agreement with our measurements. To more correctly simulate the fracture behaviours of the expanding steel casing, we applied that ductility decreases with strain rate. The phenomena may be explained by the realization of adiabatic shear bands. An implemented node splitting algorithm in IMPETUS Afea seems very promising