Hasil Pencarian  ::  Simpan CSV :: Kembali

"The book offers a unified view on classical results and recent advances in the dynamics of nonconservative systems. The theoretical fundamentals are presented systematically and include: Lagrangian and Hamiltonian formalism, non-holonomic constraints, Lyapunov stability theory, Krein theory of spectra of Hamiltonian systems and modes of negative and positive energy, anomalous Doppler effect, reversible systems, sensitivity analysis of non-self-adjoint operators, dissipation-induced instabilities, local and global instabilities. They are applied to engineering situations such as the coupled mode flutter of wings, flags and pipes, flutter in granular materials, piezoelectric mechanical metamaterials, wave dynamics of infinitely long structures, radiative damping, stability of high-speed trains, experimental realization of follower forces, soft-robot locomotion, wave energy converters, friction-induced instabilities, brake squeal, non-holonomic sailing, dynamics of moving continua, and stability of bicycles and walking robots. The book responds to a demand in the modern theory of nonconservative systems coming from the growing number of scientific and engineering disciplines including physics, fluid and solids mechanics, fluid-structure interactions, and modern multidisciplinary research areas such as biomechanics, micro- and nanomechanics, optomechanics, robotics, and material science. It is targeted at both young and experienced researchers and engineers working in fields associated with the dynamics of structures and materials. The book will help to get a comprehensive and systematic knowledge on the stability, bifurcations and dynamics of nonconservative systems and establish links between approaches and methods developed in different areas of mechanics and physics and modern applied mathematics."

"This book provides a comprehensive reference for the studies of mechanical properties of materials over multiple length and time scales. The topics include nanomechanics, micromechanics, continuum mechanics, mechanical property measurements, and materials design. The handbook employs a consistent and systematic approach offering readers a user friendly reference ideal for frequent consultation. It is appropriate for an audience at of graduate students, faculties, researchers, and professionals in the fields of Materials Science, Mechanical Engineering, Civil Engineering, Engineering Mechanics, and Aerospace Engineering."

"This book treats dynamic stability of structures under nonconservative forces. It is not a mathematics-based, but rather a dynamics-phenomena-oriented monograph, written with a full experimental background. Starting with fundamentals on stability of columns under nonconservative forces, it then deals with the divergence of Eulers column under a dead (conservative) loading from a view point of dynamic stability. Three experiments with cantilevered columns under a rocket-based follower force are described to present the verifiability of nonconservative problems of structural stability. Dynamic stability of columns under pulsating forces is discussed through analog experiments, and by analytical and experimental procedures together with related theories. Throughout the volume the authors retain a good balance between theory and experiments on dynamic stability of columns under nonconservative loading, offering a new window to dynamic stability of structures, promoting student- and scientist-friendly experiments."

"This book provides a concise introduction to soft matter modelling, together with an up-to-date review of the continuum mechanical description of soft and biological materials, from the basics to the latest scientific materials. It also includes multi-physics descriptions, such as chemo-, thermo-, and electro-mechanical coupling. The new edition includes a new chapter on fractures as well as numerous corrections, clarifications and new solutions. Based on a graduate course taught for the past few years at Technion, it presents original explanations for a number of standard materials, and features detailed examples to complement all topics discussed."

"Tuberkulosis (TB) adalah salah satu penyakit menular yang disebabkan oleh bakteri Mycrobacterium Tuberculosis. Penyakit TB paling sering menyerang paru-paru, tetapi juga dapat menyerang organ tubuh lain seperti otak, ginjal, tulang belakang, hati, dan lain-lain. Penyakit TB merupakan salah satu dari sepuluh penyebab kematian teratas di dunia. Pada penelitian ini, dikonstruksi model matematika penyebaran penyakit TB dengan menggunakan model SEI (Susceptible, Exposed, Infectious). Dari model tersebut, dilakukan analisis secara analitik dan numerik. Kajian analitik yang dilakukan berupa eksistensi dan kestabilan titik keseimbangan, pembentukan basic reproduction number (R0) dan analisis bifurkasi dari model. Pada kajian analisis model, diperoleh titik keseimbangan bebas penyakit TB bersifat stabil asimtotik lokal ketika R0<1 dan tidak stabil ketika R0>1. Lebih jauh, titik keseimbangan endemik TB selalu ada ketika R0>1. Saat R0=1, model ini juga menunjukkan adanya fenomena bifurkasi mundur yang dijelaskan menggunakan teorema Castillo-Chavez dan Song. Pada kajian numerik berupa analisis sensitivitas dan elastisitas (R0) serta simulasi autonomous dilakukan untuk memberikan gambaran dan interpretasi terhadap hasil kajian analitik yang telah dilakukan.

---

Tuberculosis (TB) is an infectious disease caused by Mycobacterium tuberculosis. TB disease most often attacks the lungs and can also attack other organs such as the brain, kidneys, spine, liver, etc. TB disease is one of the top ten causes of death globally. In this study, a mathematical model of the spread of TB disease was constructed using the SEI (Susceptible, Exposed, Infectious) model. From the model, analytical and numerical analysis is carried out. Analytical studies are carried out regarding the existence and stability of equilibrium points, the basic reproduction number (R0), and the bifurcation analysis of the model. The model analysis found that the TB disease free equilibrium point is locally asymptotically stable when R0<1 and unstable when R0>1. The TB endemic equilibrium point always exists when R0>1. When R0=1, this model also indicates the existence of a backward bifurcation phenomenon that is explained using the Castillo-Chavez and Song theorem. Numerical studies are carried out related to sensitivity and elasticity (R0) analysis and autonomous simulation of the model to provide an overview of the results of the analytical studies that have been carried out."

"This book gives a unified presentation in an abstract setting of the main theorems in bifurcation theory, as well as more recent and lesser known results. It covers both the local and global theory of one-parameter bifurcations for operators acting in infinite-dimensional Banach spaces, and shows how to apply the theory to problems involving partial differential equations. In addition to existence, qualitative properties such as stability and nodal structure of bifurcating solutions are treated in depth. "

"This book presents, in a uniform way, several problems in applied mechanics, which are analysed using the matrix theory and the properties of eigenvalues and eigenvectors. It reveals that various problems and studies in mechanical engineering produce certain patterns that can be treated in a similar way. Accordingly, the same mathematical apparatus allows us to study not only mathematical structures such as quadratic forms, but also mechanics problems such as multibody rigid mechanics, continuum mechanics, vibrations, elastic and dynamic stability, and dynamic systems. In addition, the book explores a wealth of engineering applications. "

"[This book covers theoretical and applications-based problems of nonlinear dynamics concerned with both discrete and continuous systems of interest in civil and mechanical engineering. They include pendulum-like systems, slender footbridges, shape memory alloys, sagged elastic cables and non-smooth problems., This book covers theoretical and applications-based problems of nonlinear dynamics concerned with both discrete and continuous systems of interest in civil and mechanical engineering. They include pendulum-like systems, slender footbridges, shape memory alloys, sagged elastic cables and non-smooth problems.]"